Learn by Novus · Open practice pack v1

Working memory: hold, update, and manipulate: open practice pack: learner worksheet

100 untimed questions across 10 authored sections.

This is untimed educational practice for one cognitive skill. It is not a clinical, diagnostic, employment, or professionally recognized assessment, and it does not produce an IQ score or credential.

Learner worksheet

Working memory is the skill of holding, updating, and manipulating short sequences, rules, or instructions entirely in your head. Work through each section at your own pace, and try to answer from memory without scrolling back. That is what makes this genuine working-memory practice rather than a lookup.

Choose one answer for each item. For a delayed-recall item, read its study text, cover it, and then answer without looking back.

Holding short sequences

Read each short sequence once, hold it in mind, and answer without re-reading.

1. working-memory-s01-q01

Sequence: 8 - 3 - 6 - 1 - 9. What is the sum of the first and last digits?

  1. 15
  2. 16
  3. 17
  4. 18

Answer:

2. working-memory-s01-q02

Sequence: R - K - P - M - T. Which letter is exactly in the middle position?

  1. K
  2. P
  3. M
  4. T

Answer:

3. working-memory-s01-q03

Hold these three words in mind: BASKET, UMBRELLA, CANDLE. Which one has the most letters?

  1. Basket
  2. Umbrella
  3. Candle
  4. They are all the same length

Answer:

4. working-memory-s01-q04

Sequence: 4 - 7 - 2 - 9 - 5 - 1. Reading backward from the last digit, what is the third digit you reach?

  1. 5
  2. 9
  3. 2
  4. 7

Answer:

5. working-memory-s01-q05

Hold in mind: apple = 3, banana = 5, cherry = 2. What is apple + cherry?

  1. 5
  2. 7
  3. 8
  4. 10

Answer:

6. working-memory-s01-q06

Shape sequence: circle, triangle, circle, square, triangle. How many circles appeared?

  1. 1
  2. 2
  3. 3
  4. 4

Answer:

7. working-memory-s01-q07

Sequence: 5 - 2 - 8. What is the sum of all three digits?

  1. 13
  2. 14
  3. 16
  4. 15

Answer:

8. working-memory-s01-q08

Hold these words in mind: LAMP, RIVER, STONE. Which word came second?

  1. Lamp
  2. Stone
  3. River
  4. Stove

Answer:

9. working-memory-s01-q09

Sequence: T - F - B - X. Which letter came immediately after F?

  1. B
  2. X
  3. T
  4. F

Answer:

10. working-memory-s01-q10

Colour sequence: red, green, blue, green. How many times did green appear?

  1. 1
  2. 3
  3. 4
  4. 2

Answer:

Ordered recall after study

Each item shows material to study first: continue to hide it, then answer entirely from memory.

11. working-memory-s02-q01

Study text. Read this, then cover it before answering.

Study this sequence, then continue: 7, 1, 8, 4.

What was the third number in the sequence?

  1. 1
  2. 4
  3. 8
  4. 7

Answer:

12. working-memory-s02-q02

Study text. Read this, then cover it before answering.

Study this word list in order, then continue: FERN, TIGER, CLOUD, BRICK.

Which word was last in the list?

  1. Cloud
  2. Brick
  3. Tiger
  4. Fern

Answer:

13. working-memory-s02-q03

Study text. Read this, then cover it before answering.

Study these letters in order, then continue: G, M, S, K, V.

Which letter was in the middle (third) position?

  1. M
  2. K
  3. G
  4. S

Answer:

14. working-memory-s02-q04

Study text. Read this, then cover it before answering.

Study this list, then continue: spoon, ladder, candle, marble, ribbon.

Which of these was NOT in the list?

  1. Ladder
  2. Marble
  3. Ribbon
  4. Carpet

Answer:

15. working-memory-s02-q05

Study text. Read this, then cover it before answering.

Study this sequence, then continue: 3, 9, 9, 2, 6.

Which number appeared twice?

  1. 9
  2. 3
  3. 2
  4. 6

Answer:

16. working-memory-s02-q06

Study text. Read this, then cover it before answering.

Study these names in order, then continue: Priya, Callum, Nadia, Tomas.

Who was listed immediately before Nadia?

  1. Priya
  2. Tomas
  3. Callum
  4. Nadia

Answer:

17. working-memory-s02-q07

Study text. Read this, then cover it before answering.

Study this short instruction, then continue: "Turn left at the library, then take the second door on the right."

Which door should you take after turning at the library?

  1. The first door on the left
  2. The second door on the right
  3. The second door on the left
  4. The first door on the right

Answer:

18. working-memory-s02-q08

Study text. Read this, then cover it before answering.

Study this sequence, then continue: Q, 4, R, 7, Z.

How many letters (as opposed to digits) were in the sequence?

  1. 3
  2. 2
  3. 4
  4. 5

Answer:

19. working-memory-s02-q09

Study text. Read this, then cover it before answering.

Study this list in order, then continue: violet, amber, teal, coral, olive, slate.

Which colour was fifth in the list?

  1. Coral
  2. Olive
  3. Slate
  4. Teal

Answer:

20. working-memory-s02-q10

Study text. Read this, then cover it before answering.

Study this sequence, then continue: 6, 2, 7, 5, 1, 9, 3.

What was the second-to-last number?

  1. 1
  2. 3
  3. 9
  4. 5

Answer:

Reversing and reordering

Hold each sequence, then mentally reverse, swap, or re-sort it before answering.

21. working-memory-s03-q01

Sequence: 4 - 1 - 7. Say it backwards in your head. What is the middle digit of the reversed sequence?

  1. 4
  2. 7
  3. 1
  4. It cannot be known

Answer:

22. working-memory-s03-q02

Sequence: N - E - P - A. Reversed, which letter comes first?

  1. A
  2. N
  3. P
  4. E

Answer:

23. working-memory-s03-q03

Sequence: 2 - 8 - 5 - 3. Read backwards, what are the first two digits?

  1. 2 then 8
  2. 3 then 5
  3. 5 then 3
  4. 8 then 2

Answer:

24. working-memory-s03-q04

Sequence: 9 - 4 - 6 - 2 - 7. If you reverse the sequence, which digit is now in the fourth position?

  1. 6
  2. 2
  3. 9
  4. 4

Answer:

25. working-memory-s03-q05

Study text. Read this, then cover it before answering.

Study this sequence, then continue: 5, 8, 1, 6.

From memory, what is the sequence in reverse order?

  1. 6, 1, 8, 5
  2. 5, 8, 1, 6
  3. 6, 8, 1, 5
  4. 1, 6, 5, 8

Answer:

26. working-memory-s03-q06

Sequence: L - D - Q - J - X. Swap the first and last letters in your head. Which letter is now first?

  1. L
  2. X
  3. J
  4. Q

Answer:

27. working-memory-s03-q07

Sequence: 3 - 7 - 2 - 9. Sort the digits from smallest to largest in your head. Which digit is now third?

  1. 3
  2. 2
  3. 7
  4. 9

Answer:

28. working-memory-s03-q08

Sequence: 6 - 1 - 8 - 4 - 5. Move the first digit to the end of the sequence. What is the new middle digit?

  1. 8
  2. 5
  3. 6
  4. 4

Answer:

29. working-memory-s03-q09

Words: PEAR, MINT, OAK. Reverse the word order, then spell the middle word backwards. What do you get?

  1. TNIM
  2. KAO
  3. RAEP
  4. MINT

Answer:

30. working-memory-s03-q10

Sequence: 7 - 3 - 8 - 2 - 6 - 4. Reverse the sequence, then find the sum of the first two digits of the reversed sequence.

  1. 9
  2. 11
  3. 10
  4. 13

Answer:

Running totals and updating

Update a value or tally step by step as you read. Carry only the latest state forward.

31. working-memory-s04-q01

Start with 5. Add 3, subtract 2, add 4. What number do you finish with?

  1. 9
  2. 10
  3. 11
  4. 8

Answer:

32. working-memory-s04-q02

Count the vowels as this list goes past: apple, kiwi, plum. How many vowels appear across all three words?

  1. 4
  2. 6
  3. 5
  4. 3

Answer:

33. working-memory-s04-q03

A lift starts on floor 3. It goes up 4 floors, down 2, up 1. Which floor is it on now?

  1. 6
  2. 5
  3. 7
  4. 8

Answer:

34. working-memory-s04-q04

Start with the word CART. Replace the first letter with P. Which word do you now have?

  1. PORT
  2. CARP
  3. PART
  4. TARP

Answer:

35. working-memory-s04-q05

Keep a running count: how many even numbers pass by in this list: 7, 4, 9, 2, 6, 3, 8?

  1. 3
  2. 5
  3. 2
  4. 4

Answer:

36. working-memory-s04-q06

Start with 20. Halve it, add 6, then subtract 9. What is the result?

  1. 8
  2. 7
  3. 6
  4. 9

Answer:

37. working-memory-s04-q07

Track two counters. Starting at zero, add 1 to counter A each time you read the word LEFT and 1 to counter B each time you read RIGHT: LEFT, RIGHT, LEFT, LEFT, RIGHT, LEFT. What are the final values of A and B?

  1. A = 4, B = 2
  2. A = 3, B = 3
  3. A = 2, B = 4
  4. A = 5, B = 1

Answer:

38. working-memory-s04-q08

Start at 50. Subtract 7 repeatedly, three times in total. Where do you land?

  1. 31
  2. 27
  3. 36
  4. 29

Answer:

39. working-memory-s04-q09

Update the letter each step. Start with B. Move forward two places in the alphabet, then back one, then forward three. Which letter do you reach?

  1. E
  2. G
  3. F
  4. D

Answer:

40. working-memory-s04-q10

You are tracking stock of one item. Start with 12 units. Sell 5, receive 8, sell 6, receive 2. How many units remain?

  1. 10
  2. 12
  3. 9
  4. 11

Answer:

Following multi-step instructions

Hold a short set of instructions in mind and carry them out in order, entirely mentally.

41. working-memory-s05-q01

Take the number 6. Double it, then add the number of letters in the word DOG. What is the result?

  1. 14
  2. 15
  3. 16
  4. 18

Answer:

42. working-memory-s05-q02

Follow all three steps in your head: think of the word TRAIN; remove the first letter; add the letter S to the end. What word results?

  1. TRAINS
  2. RAINS
  3. SRAIN
  4. RAIN

Answer:

43. working-memory-s05-q03

Apply these rules to the number 9: if it is odd, add 5; then, if the result is even, halve it. What do you get?

  1. 7
  2. 9
  3. 14
  4. 4

Answer:

44. working-memory-s05-q04

Follow the instructions in order: start facing north; turn right; turn right again; turn left. Which direction are you facing?

  1. North
  2. South
  3. West
  4. East

Answer:

45. working-memory-s05-q05

Hold this rule: whenever a word contains the letter E, count it. How many of these words get counted: TABLE, CHAIR, DESK, LAMP, SHELF?

  1. 2
  2. 4
  3. 3
  4. 5

Answer:

46. working-memory-s05-q06

Do all steps mentally: write the digits of 47 in reverse; then add 2 to the result. What number do you get?

  1. 74
  2. 49
  3. 72
  4. 76

Answer:

47. working-memory-s05-q07

Follow the rule chain for the letter M: move one letter forward in the alphabet; if the result comes after P, move two letters back; otherwise move one more forward. Which letter do you reach?

  1. O
  2. N
  3. L
  4. P

Answer:

48. working-memory-s05-q08

Carry out these steps: take the word STONE; swap the first two letters; read the result. Which of these do you get?

  1. SOTNE
  2. TSONE
  3. STONE
  4. ETONS

Answer:

49. working-memory-s05-q09

Hold all three conditions, then judge: a number qualifies if it is greater than 10, even, and not a multiple of 6. Which of these qualifies: 14, 12, 9, 18?

  1. 12
  2. 18
  3. 9
  4. 14

Answer:

50. working-memory-s05-q10

Follow every step: start with 3; multiply by 4; subtract 5; multiply the result by itself. What is the final number?

  1. 49
  2. 36
  3. 64
  4. 44

Answer:

Holding under interference

Study something, do a small unrelated mental task, then recall. The distraction is deliberate.

51. working-memory-s06-q01

Study text. Read this, then cover it before answering.

Remember this word, then continue: HARBOUR.

First, solve 6 + 7 in your head. Now, which word were you asked to remember?

  1. Harbour
  2. Harvest
  3. Arbour
  4. Harbinger

Answer:

52. working-memory-s06-q02

Study text. Read this, then cover it before answering.

Remember this number, then continue: 58.

Count backwards from 10 to 1 in your head. What number were you asked to remember?

  1. 85
  2. 58
  3. 48
  4. 68

Answer:

53. working-memory-s06-q03

Study text. Read this, then cover it before answering.

Remember these two words, then continue: CANDLE, ORANGE.

Mentally spell your own first name, then answer: which pair matches what you studied?

  1. Candle and Orchid
  2. Kindle and Orange
  3. Candle and Orange
  4. Candle and Amber

Answer:

54. working-memory-s06-q04

Study text. Read this, then cover it before answering.

Remember this sequence, then continue: 4, 9, 1.

First decide mentally whether 17 is odd or even; then recall, what was the middle number of the studied sequence?

  1. 4
  2. 1
  3. 17
  4. 9

Answer:

55. working-memory-s06-q05

Hold the letters K and T in mind. Count the words in the phrase 'the quick silver fox' (there are four). Now: which of the held letters comes later in the alphabet?

  1. K
  2. Q
  3. T
  4. They are equal

Answer:

56. working-memory-s06-q06

Study text. Read this, then cover it before answering.

Remember this shopping item and quantity, then continue: 3 lemons.

Mentally add 14 + 9; then recall what you studied. Which was it?

  1. 3 lemons
  2. 4 lemons
  3. 3 melons
  4. 2 lemons

Answer:

57. working-memory-s06-q07

Study text. Read this, then cover it before answering.

Remember these three digits in order, then continue: 7, 2, 5.

First judge which is larger: 48 or 51. Now, from memory, what was the studied sequence?

  1. 7, 5, 2
  2. 7, 2, 5
  3. 2, 7, 5
  4. 7, 2, 6

Answer:

58. working-memory-s06-q08

Study text. Read this, then cover it before answering.

Remember this phrase, then continue: GREEN DOOR.

Mentally count the sides of a hexagon; then recall the phrase you studied.

  1. Green Floor
  2. Grey Door
  3. Green Down
  4. Green Door

Answer:

59. working-memory-s06-q09

Study text. Read this, then cover it before answering.

Remember these two numbers, then continue: 34 and 81.

First work out 5 × 6 in your head; then answer, what is the sum of the two numbers you studied?

  1. 105
  2. 115
  3. 125
  4. 47

Answer:

60. working-memory-s06-q10

Study text. Read this, then cover it before answering.

Remember this seat allocation, then continue: Row F, Seat 12.

Mentally name the month that follows October; now recall, which seat allocation did you study?

  1. Row F, Seat 12
  2. Row E, Seat 12
  3. Row F, Seat 21
  4. Row G, Seat 11

Answer:

Dual tasks: hold and compute

Keep several values in mind and calculate with them at the same time.

61. working-memory-s07-q01

Hold these prices in mind: tea = £2, scone = £3, juice = £4. What is the total cost of one tea and two scones?

  1. £7
  2. £9
  3. £8
  4. £10

Answer:

62. working-memory-s07-q02

Remember the code pairs: X = 5, Y = 8, Z = 2. What is (X × Z) + Y?

  1. 18
  2. 15
  3. 20
  4. 16

Answer:

63. working-memory-s07-q03

Hold this in mind: the red box weighs 4 kg, the blue box weighs 7 kg, the green box weighs 5 kg. Which two boxes together weigh exactly 9 kg?

  1. Red and blue
  2. Red and green
  3. Blue and green
  4. No pair weighs 9 kg

Answer:

64. working-memory-s07-q04

Study text. Read this, then cover it before answering.

Study these values, then continue: north = 6, south = 1, east = 9.

From memory, what is north + east − south?

  1. 16
  2. 15
  3. 13
  4. 14

Answer:

65. working-memory-s07-q05

Hold the sequence 5 - 3 - 8 in mind while you double each digit. What is the doubled sequence?

  1. 10, 6, 16
  2. 10, 8, 16
  3. 8, 6, 16
  4. 10, 6, 14

Answer:

66. working-memory-s07-q06

Remember: Anna scored 12, Ben scored 9, Chloe scored 15. Who scored closest to 11?

  1. Ben
  2. Chloe
  3. Anna
  4. Anna and Ben are equally close

Answer:

67. working-memory-s07-q07

Hold these three times in mind: bus at 09:20, train at 09:45, tram at 09:35. Which departs second?

  1. Bus
  2. Tram
  3. Train
  4. They depart together

Answer:

68. working-memory-s07-q08

Study text. Read this, then cover it before answering.

Study this stock note, then continue: shelf A holds 14 tins, shelf B holds 8 tins.

From memory, how many tins must move from shelf A to shelf B for the two shelves to hold equal numbers?

  1. 2
  2. 4
  3. 6
  4. 3

Answer:

69. working-memory-s07-q09

Keep the number 27 in mind. Now compute 6 × 4. Is the held number larger, smaller, or equal to the result, and by how much?

  1. Larger by 3
  2. Smaller by 3
  3. They are equal
  4. Larger by 4

Answer:

70. working-memory-s07-q10

Hold these exchange values: 1 token = 3 stars; 1 star = 2 coins. How many coins is 2 tokens worth?

  1. 6
  2. 10
  3. 8
  4. 12

Answer:

Substitutions and rule mapping

Memorise a small code or rule, then apply it to new material without writing anything down.

71. working-memory-s08-q01

Use this code: star = 4, moon = 7. What is star + moon + star?

  1. 11
  2. 15
  3. 18
  4. 14

Answer:

72. working-memory-s08-q02

Apply the rule 'swap every A with O' to the word ALARM. What results?

  1. OLORM
  2. OLARM
  3. ALORM
  4. ORLOM

Answer:

73. working-memory-s08-q03

Hold this mapping: 1 = D, 2 = B, 3 = F. Decode the sequence 3 - 1 - 2.

  1. F, B, D
  2. D, F, B
  3. F, D, B
  4. B, D, F

Answer:

74. working-memory-s08-q04

Apply the rule 'shift each letter one place forward in the alphabet' to the word BEE. What do you get?

  1. CFF
  2. BFF
  3. CEE
  4. DGG

Answer:

75. working-memory-s08-q05

Use the code: triangle means add 10, square means subtract 4. Starting from 6, apply: triangle, square, triangle. What is the result?

  1. 20
  2. 24
  3. 18
  4. 22

Answer:

76. working-memory-s08-q06

Hold this mapping: cat becomes dog, dog becomes bird, bird becomes cat. Apply the mapping twice, starting from 'cat'. What do you get?

  1. Cat
  2. Dog
  3. Bird
  4. Fish

Answer:

77. working-memory-s08-q07

Substitute digits for letters using A = 1, B = 2, C = 3, D = 4. What is the value of the word CAB added up?

  1. 6
  2. 7
  3. 5
  4. 8

Answer:

78. working-memory-s08-q08

Apply this rule to the sequence 2, 5, 8: replace each even number with E and each odd number with O. What is the result?

  1. O, E, O
  2. E, O, E
  3. E, E, O
  4. O, O, E

Answer:

79. working-memory-s08-q09

Hold both rules: rule one doubles a number; rule two adds 3. Apply rule one, then rule two, then rule one again, starting from 4. What is the result?

  1. 19
  2. 25
  3. 22
  4. 16

Answer:

80. working-memory-s08-q10

Use the cipher 'each letter of the coded message maps back to the previous letter of the alphabet' to decode the message HBUF. What word appears?

  1. FETE
  2. HAVE
  3. GAZE
  4. GATE

Answer:

Tracking several things at once

Follow two or more changing quantities, positions, or states through a short scenario.

81. working-memory-s09-q01

Two jars start empty. You add 3 marbles to jar A, 2 to jar B, then move 1 marble from A to B. How many marbles are in jar B now?

  1. 2
  2. 4
  3. 3
  4. 5

Answer:

82. working-memory-s09-q02

Track three runners. Amir starts 1st, Beth 2nd, Cara 3rd. Beth overtakes Amir; then Cara overtakes Amir. Who is now 2nd?

  1. Amir
  2. Beth
  3. Nobody: the order is unchanged
  4. Cara

Answer:

83. working-memory-s09-q03

A scoreboard starts at Home 0, Away 0. Home scores twice, Away scores once, Home scores once more, Away scores twice. What is the final score?

  1. Home 3, Away 3
  2. Home 3, Away 2
  3. Home 2, Away 3
  4. Home 4, Away 2

Answer:

84. working-memory-s09-q04

Study text. Read this, then cover it before answering.

Study these starting values, then continue: kettle = 5, toaster = 2.

From memory, add 3 to the kettle value and double the toaster value. What are the new values?

  1. Kettle 7, toaster 4
  2. Kettle 8, toaster 4
  3. Kettle 8, toaster 5
  4. Kettle 6, toaster 4

Answer:

85. working-memory-s09-q05

Follow the swaps. Cups start in order: red, blue, green (left to right). Swap the left and middle cups; then swap the middle and right cups. What is the order now, left to right?

  1. Blue, green, red
  2. Green, blue, red
  3. Red, green, blue
  4. Blue, red, green

Answer:

86. working-memory-s09-q06

Keep two tallies while reading: count words starting with S, and words ending with T. List: SALT, STAR, NET, SOFT, MAP. What are the two tallies?

  1. 3 and 2
  2. 2 and 3
  3. 3 and 3
  4. 4 and 2

Answer:

87. working-memory-s09-q07

A library cart has 10 books. At the first stop, 4 are removed and 2 added. At the second stop, half the books are removed. How many books remain?

  1. 5
  2. 4
  3. 6
  4. 3

Answer:

88. working-memory-s09-q08

Track the letter and the number together. Start with C3. Each step moves the letter one forward in the alphabet and the number one up: step once, then twice more. What do you reach?

  1. E5
  2. F7
  3. G6
  4. F6

Answer:

89. working-memory-s09-q09

Three switches are all off. You flip switch 1, flip switch 2, flip switch 1 again, then flip switch 3. Which switches end up on?

  1. Switches 1 and 2
  2. Switches 2 and 3
  3. Switch 2 only
  4. All three

Answer:

90. working-memory-s09-q10

Update two accounts in your head. Account P starts with £40, account Q with £25. Transfer £10 from P to Q, then Q pays £15 out. Which account now holds more, and how much does it hold?

  1. Q, with £35
  2. P, with £40
  3. Q, with £20
  4. P, with £30

Answer:

Layered hold-and-transform challenges

The hardest set: combine studied material, multiple rules, and several transformations in one item.

91. working-memory-s10-q01

Study text. Read this, then cover it before answering.

Study this rule set, then continue: start = 9; rule X doubles the number; rule Y subtracts 4; apply the rules in the order X, Y, X.

From memory, what is the final number?

  1. 24
  2. 28
  3. 32
  4. 26

Answer:

92. working-memory-s10-q02

Hold everything in your head: four parcels weigh 2 kg, 5 kg, 3 kg, and 6 kg, in that order. Swap the middle two weights, then add the first and third weights of the new order. What is the result?

  1. 8
  2. 5
  3. 7
  4. 9

Answer:

93. working-memory-s10-q03

Work entirely in your head: reverse the digits of 316, then subtract the smallest digit of the original number from the result. What number do you get?

  1. 612
  2. 613
  3. 610
  4. 615

Answer:

94. working-memory-s10-q04

Follow the full chain: start with the word PLANET; remove the last letter; reverse what remains. What is the second letter of the result?

  1. E
  2. A
  3. L
  4. N

Answer:

95. working-memory-s10-q05

Study text. Read this, then cover it before answering.

Study this table, then continue: Monday = 4 deliveries, Tuesday = 7, Wednesday = 5, Thursday = 1.

From memory, which two days together total exactly 9 deliveries?

  1. Tuesday and Thursday
  2. Monday and Tuesday
  3. Monday and Wednesday
  4. Wednesday and Thursday

Answer:

96. working-memory-s10-q06

Hold three rules at once and apply them to the number 8: if it is even, add 5; if the result is odd, double it; if the final result is greater than 20, subtract 1. What do you get?

  1. 26
  2. 21
  3. 24
  4. 25

Answer:

97. working-memory-s10-q07

Keep the sequence 9 - 2 - 6 - 4 in mind. Replace each digit with the difference between it and 10, keeping the order. What is the new sequence?

  1. 1, 8, 4, 6
  2. 1, 8, 6, 4
  3. 9, 8, 4, 6
  4. 1, 2, 4, 6

Answer:

98. working-memory-s10-q08

Study text. Read this, then cover it before answering.

Study these seat swaps, then continue: Aisha, Ben, Kofi, and Lena sit in seats 1 to 4 in that order; then Aisha and Kofi swap seats; then Ben and Lena swap seats.

From memory, who ends up in seat 2?

  1. Ben
  2. Aisha
  3. Kofi
  4. Lena

Answer:

99. working-memory-s10-q09

Do the whole calculation mentally, holding intermediate results: (the number of days in a week × 3) minus (the number of sides of a square × 2). What is the answer?

  1. 12
  2. 14
  3. 13
  4. 15

Answer:

100. working-memory-s10-q10

The hardest hold: memorise the mapping red = 2, blue = 5, green = 7 as you read. A bag holds one red token, one blue token, and one green token. Halve the total value, then add the value of one red token. What is the final number?

  1. 10
  2. 8
  3. 9
  4. 11

Answer: