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Number patterns · SET 12

Question 1

What number should replace the question mark? 10, 10, 9, 7, 7, ?, 4, 4, 3, 1 Answer with a natural number.

Question 2

What number should replace the question mark? (Three pyramids have bottom numbers 3 and 12, 2 and 8, ? and 4, and top numbers 6, 4 and 2.) Answer with a natural number.

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Question 3

329 : 15 and 746 : 34. Which pair of numbers has the same relationship to each other as the two pairs above? 287 : 22; 698 : 62; 942 : 68; 382 : 12; 749 : 35
  1. 287 : 22
  2. 698 : 62
  3. 942 : 68
  4. 382 : 12
  5. 749 : 35

Question 4

Find five consecutive digits in 7396413793541765 that total 22. Write them as one number. Answer with a natural number.

Question 5

What number should replace the question mark? The triangle has rows 9 / 7 2 / 5 7 6 / 4 6 ? 8. Answer with a natural number.

Question 6

What number should replace the question mark? Three triangles have a top number, bottom-left and bottom-right numbers, and a middle number: (3, 8, 4, 44), (9, 7, 2, 32) and (8, 7, ?, 75). Answer with a natural number.

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Question 7

Which is the missing section? (The grid has rows 5 2 3 10 / 6 4 1 11 / 1 9 ? 12 / 12 ? 6 ?.) Choose from the options labelled in the figure.

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  1. A
  2. B
  3. C
  4. D

Question 8

What number should replace the question mark? 1, 101, 15, 4, 29, -93, 43, -190, ? Answer with a natural number.

Question 9

What number should replace the question mark? 110, ?, 99, 81, 72, 63, 54, 45 Answer with a natural number.

Question 10

What number should replace the question mark? 5, 26, 131, 656, ? Answer with a natural number.

Question 11

What number should replace the question mark? 1000, 971.4, 942.8, 914.2, 885.6, ? Answer with a natural number.

Question 12

What number should replace the question mark? 1, 1, 3, 15, 105, ? Answer with a natural number.

Question 13

If A = 3, B = 4, C = 6 and D = 7, calculate ((C x D) - (B x C)) / (A + C). Answer with a natural number.

Question 14

What number should replace the question mark? Four groups of five numbers (top, left, middle, right, bottom): (3, 5, 11, 9, 7), (5, 9, 21, 17, 13), (4, 7, 16, 13, 10), (6, 11, ?, 21, 16). Answer with a natural number.

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Question 15

783 : 59, 395 : 32, 579 : 44, 666 : ? Answer with a natural number.

Question 16

What number should replace the question mark? Each triangle has a top, left and right number and a centre number: (13, 8, 3, 6), (17, 19, 6, 10) and (23, 15, 5, ?). Answer with a natural number.

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Question 17

What number should replace the question mark? 10, 11, 14, 23, ?, 131 Answer with a natural number.

Question 18

What number should replace the question mark? Each triangle has a top, left, right and centre number: (8, 7, 784, 14), (3, 9, 486, 18) and (9, 5, 540, ?). Answer with a natural number.

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Question 19

What number should replace the question mark? The shapes and numbers are: triangle 27, parallelogram 64, pentagon 125, hexagon 216 and a heptagon with ?. Answer with a natural number.

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Question 20

Which number is the odd one out among 4, 36, 20, 8, 56, 28, 18, 32, 9, 16, 14, 5 and 7? Answer with a natural number.