Missing Number (SSC CPO 2023 Tier -1)

1. Find the missing number? [SSC CPO 03/10/2023 (1st Shift)]

(a) 114
(b) 144
(c) 134
(d) 124

Correct Answer: (a) 114

Solution:Logic:
(3rd number - 1st number) ÷ 3 = (2nd number)
(19, 6, 37) → (37 - 19) ÷ 3 = (18) ÷ 3 = 6
(21, 8, 45) → (45 - 21) ÷ 3 = (24) ÷ 3 = 8
Similarly...
(72, 14, ?) → (114 - 72) ÷ 3 → 42 ÷ 3 = 14

2. Find the missing number? [SSC CGL 14/07/2023 (3rd shift)]

(a) 93
(b) 85
(c) 95
(d) 83

Correct Answer: (d) 83

Solution:Logic:
1st number x 3 + 4 = 2nd number, 2nd number x 2 - 3 = 3rd number
(8, 28, 53) → (8 x 3) + 4 = 28, 28 x 2 - 3 = 53
(7, 25, 47) → (7 x 3) + 4 = 25, 25 x 2 - 3 = 47
Similarly...
(13, 43, ?) → 13 x 3 + 4 = 43, 43 x 2 - 3 = 83

3. Find the missing number? [SSC CGL 17/07/2023 (1st shift)]

(a) 8
(b) 14
(c) 4
(d) 6

Correct Answer: (d) 6

Solution:Logic:
(Second number + Third number) - 4 = First number
(6, 4, 6) → (4 + 6) - 4 = 10 - 4 = 6
(18, 9, 13) → (9 + 13) - 4 = 22 - 4 = 18
Similarly...
(6, 6, ?) → (6 + 6) - 4 = 12 - 4 = 8

4. Find the missing number? [SSC CGL 17/07/2023 (2nd shift)]

(a) 25
(b) 19
(c) 16
(d) 13

Correct Answer: (a) 25

Solution:Logic:
(First number x Second number) x 3 - 2 = Third number
(6, 2, 34) → (6 x 2) x 3 - 2 = 34
(1, 5, 13) → (1 x 5) x 3 - 2 = 13
Similarly...
(9, 1, ?) → (9 x 1) x 3 - 2 = 25

5. Find the missing number? [SSC CGL 17/07/2023 (4th shift)]

(a) 6
(b) 14
(c) 8
(d) 12

Correct Answer: (b) 14

Solution:Logic:
(Third number - Second number) ÷ 2 = First number
(2, 1, 5) → (5 - 1) ÷ 2 = 2, (4) ÷ 2 = 2
(5, 12, 22) → (22 - 12) ÷ 2 = 10 ÷ 2 = 5
Similarly...
(6, 2, ?) → (14 - 2) ÷ 2 = 12 ÷ 2 = 6

6. Find the missing number? [SSC CGL 18/07/2023 (2nd shift)]

(a) 7
(b) 9
(c) 19
(d) 13

Correct Answer: (c) 19

Solution:Logic:
(First number x 3) + (Third number) = Second number
(5, 19, 4) → (5 x 3) + 4 = 19, 15 + 4 = 19
(1, 7, 4) → (1 x 3) + 4 = 7, 3 + 4 = 7
Similarly...
(6, ?, 1) → (6 x 3) + (1) = ? , 18 + 1 = 19

7. Find the missing number? [SSC CGL 19/07/2023 (3rd shift)]

(a) 2
(b) 8
(c) 6
(d) 4

Correct Answer: (a) 2

Solution:Logic:
(First number - number) ÷ 3 = Second number
(16, 4, 4) → (16 - 4) ÷ 3 = (12) ÷ 3 = 4
(30, 5, 15) → (30 - 15) ÷ 3 = 15 ÷ 3 = 5

(8, 2 ?) → (8 - 2) ÷ 3 → (6) ÷ 3 = 2

8. Find the missing number? [SSC CGL 20/07/2023 (1st shift)]

(a) 277
(b) 299
(c) 279
(d) 297

Correct Answer: (d) 297

Solution:Logic: (First number)² + (second number)³ = Third number
(15, 3, 252) → (15)² + (3)³ = 225 + 27 = 252
(11, 5, 246) → (11)² + (5)³ = 121 + 125 = 246

Similarly,
(9, 6, ?) → (9)² + (6)² → 81 + 216 = 297

9. Find the missing number? [SSC CGL 20/07/2023 (3rd shift)]

(a) 19
(b) 27
(c) 18
(d) 24

Correct Answer: (b) 27

Solution:Logic: (First Number + Second number) × 3 = Third number
(4, 2, 18) → (4 + 2) × 3 = 6 × 3 = 18
(1, 7, 24) → (1 + 7) × 3 = 8 × 3 = 24

Similarly,
(5, 4, ?) → (5 + 4) × 3 = 9 × 3 = 27

10. Find the missing number? [SSC CGL 21/07/2023 (1st shift)]

(a) 13
(b) 9
(c) 11
(d) 7

Correct Answer: (c) 11

Solution:Logic: (First number + Second number) - 2 = Third number
(3, 5, 6) → (3 + 5) - 2 = 8 - 2 = 6
(5, 12, 15) → (5 + 12) - 2 = 17 - 2 = 15

Similarly,
(9, 4, ?) → (9 + 4) - 2 = 13 - 2 = 11