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In this series of quizzes, you need to find the relation between the three numbers in brackets. The first and third numbers will have been either added, subtracted, multiplied or divided to get the middle number. Find out which one it is and do the same to the last bracketed numbers. An example has been done for you.

Example:

(12 [4] 48), (19 [6] 114), (12 [ ? ] 36)

3

4

5

6

The correct answer is 3.

This is because 12 and 48 are related by dividing 48 by 12 to get the number in the middle. 19 is related to 114 in the SAME way (dividing 114 by 19 results in 6). The relationship is DIVIDE.

(12 [4] 48), (19 [6] 114), (12 [ ? ] 36)

3

4

5

6

The correct answer is 3.

This is because 12 and 48 are related by dividing 48 by 12 to get the number in the middle. 19 is related to 114 in the SAME way (dividing 114 by 19 results in 6). The relationship is DIVIDE.

1.

Look at the relationship between the first and last number in each set of brackets, and use that relationship to find the missing number.

Choose the correct answer from the four choices available.

(123 [100] 23), (355 [100] 255), (471 [?] 71)

Choose the correct answer from the four choices available.

(123 [100] 23), (355 [100] 255), (471 [?] 71)

100

200

300

400

123 and 23 are related by subtracting 23 from 123 to get the number in the middle. 355 is related to 255 in the SAME way (subtracting 255 from 355 results in 100). 471 - 71 = 400. The relationship is SUBTRACT

2.

Look at the relationship between the first and last number in each set of brackets, and use that relationship to find the missing number.

Choose the correct answer from the four choices available.

(16 [192] 12), (20 [340] 17), (11 [?] 27)

Choose the correct answer from the four choices available.

(16 [192] 12), (20 [340] 17), (11 [?] 27)

270

297

324

351

16 and 12 are related by multiplying 16 by 12 to get the number in the middle. 20 is related to 17 in the SAME way (multiplying 20 by 17 results in 340). 11 x 27 = 297. The relationship is MULTIPLY

3.

Look at the relationship between the first and last number in each set of brackets, and use that relationship to find the missing number.

Choose the correct answer from the four choices available.

(110 [45] 65), (540 [266] 274), (333 [?] 188)

Choose the correct answer from the four choices available.

(110 [45] 65), (540 [266] 274), (333 [?] 188)

145

154

122

111

110 and 65 are related by subtracting 65 from 110 to get the number in the middle. 540 is related to 274 in the SAME way (subtracting 274 from 540 results in 266). 333 - 188 = 145. The relationship is SUBTRACT

4.

Look at the relationship between the first and last number in each set of brackets, and use that relationship to find the missing number.

Choose the correct answer from the four choices available.

(5 [380] 76), (7 [147] 21), (9 [?] 18)

Choose the correct answer from the four choices available.

(5 [380] 76), (7 [147] 21), (9 [?] 18)

162

166

9

2

5 and 76 are related by multiplying 5 by 76 to get the number in the middle. 7 is related to 21 in the SAME way (multiplying 7 by 21 results in 147). 9 x 18 = 162. The relationship is MULTIPLY

5.

Look at the relationship between the first and last number in each set of brackets, and use that relationship to find the missing number.

Choose the correct answer from the four choices available.

(11 [154] 14), (12 [144] 12), (13 [?] 13)

Choose the correct answer from the four choices available.

(11 [154] 14), (12 [144] 12), (13 [?] 13)

0

1

26

169

11 and 14 are related by multiplying 11 by 14 to get the number in the middle. 12 is related to 12 in the SAME way (multiplying 12 by 12 results in 144). 13 x 13 = 169. The relationship is MULTIPLY

6.

Look at the relationship between the first and last number in each set of brackets, and use that relationship to find the missing number.

Choose the correct answer from the four choices available.

(360 [24] 15), (629 [37] 17), (779 [?] 19)

Choose the correct answer from the four choices available.

(360 [24] 15), (629 [37] 17), (779 [?] 19)

41

14

760

798

This is because 360 and 15 are related by dividing 360 by 15 to get the number in the middle. 629 is related to 17 in the SAME way (dividing 629 by 17 results in 37). 779 ÷ 19 = 41. The relationship is DIVIDE

7.

Look at the relationship between the first and last number in each set of brackets, and use that relationship to find the missing number.

Choose the correct answer from the four choices available.

(44 [30] 14), (61 [38] 23), (79 [?] 26)

Choose the correct answer from the four choices available.

(44 [30] 14), (61 [38] 23), (79 [?] 26)

51

52

53

54

44 and 14 are related by subtracting 14 from 44 to get the number in the middle. 61 is related to 23 in the SAME way (subtracting 23 from 61 results in 38). 79 - 26 = 53. The relationship is SUBTRACT

8.

Look at the relationship between the first and last number in each set of brackets, and use that relationship to find the missing number.

Choose the correct answer from the four choices available.

(37 [44] 7), (44 [51] 7), (51 [?] 7)

Choose the correct answer from the four choices available.

(37 [44] 7), (44 [51] 7), (51 [?] 7)

44

58

37

57

37 and 7 are related by adding 7 to 37 to get the number in the middle. 44 is related to 7 in the SAME way (adding 7 to 44 results in 51). 51 + 7 = 58. The relationship is ADD

9.

Look at the relationship between the first and last number in each set of brackets, and use that relationship to find the missing number.

Choose the correct answer from the four choices available.

(68 [17] 4), (144 [24] 6), (168 [?] 21)

Choose the correct answer from the four choices available.

(68 [17] 4), (144 [24] 6), (168 [?] 21)

6

8

21

14

This is because 68 and 4 are related by dividing 68 by 4 to get the number in the middle. 144 is related to 6 in the SAME way (dividing 114 by 6 results in 24). 168 ÷ 21 = 8. The relationship is DIVIDE

10.

Look at the relationship between the first and last number in each set of brackets, and use that relationship to find the missing number.

Choose the correct answer from the four choices available.

(49 [51] 2), (78 [85] 7), (64 [?] 9)

Choose the correct answer from the four choices available.

(49 [51] 2), (78 [85] 7), (64 [?] 9)

69

71

73

75

49 and 2 are related by adding 49 to 2 to get the number in the middle. 78 is related to 7 in the SAME way (adding 7 to 78 results in 85). 64 + 9 = 73. The relationship is ADD

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