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Number Puzzles | Logical Puzzles with Answers - Reasoning MCQs for SSC Exam

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Find the missing term in each of the following:

(1)

[A] 13
[B] 15
[C] 16
[D] 19
Answer: Option [C]
Solution:

(11 + 25) - 17 = 36 - 17 = 19

(6 + 34) - 12 = 40 - 12 = 28

(8 + 19) - x = 11 ⇒ x = 27 - 11 = 16

(2)

[A] 22
[B] 26
[C] 30
[D] 34
Answer: Option [B]

Solution:

Number at the centre is the sum of the numbers in the row and column.

83 - (25 + 41) = 83 - 66 = 17

83 - (25 + 26) = 83 - 51 = 32

83 - (41 + 31) = 83 - 72 = 11

So, missing number = 83 - (26 + 31) = 83 - 57 = 26

(3)

[A] 23
[B] 25
[C] 27
[D] 29
Answer: Option [C]

Solution:

112 - 12 = 121 - 1 = 120

72 - 22 = 49 - 4 = 45

Hence, missing number = 62 - 32 = 36 - 9 = 27

(4)

[A] 5
[B] 8
[C] 11
[D] 13
Answer: Option [A]

Solution:

Number in third column = 2 × Number in first column + 3 × Number in Second column

(2 × 8) + (17 × 3) = 67

(13 × 2) + (11 × 3) = 59

So, (x × 2) + (13 × 3) = 49 ⇒ x × 2 = 49 - 39 ⇒ x = 5

(5)

[A] 5
[B] 10
[C] 8
[D] 6
Answer: Option [D]

Solution:

5 × 4 × 8 = 160

7 × 8 × 6 = 336

So, missing number = 9 × 2 × x = 108 ⇒ x = 108 ÷ 18 = 6

(6)

[A] 110
[B] 115
[C] 120
[D] 125
Answer: Option [B]

Solution:

(1 + 2 + 4 + 3) × 5 = 50

(3 + 4 + 5 + 2) × 5 = 70

So, missing number (7 + 4 + 9 + 3) × 5 = 115

(7)

[A] 15
[B] 16
[C] 17
[D] 18

Answer: Option [C]

Solution:

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