Missing Number (SSC CHSL 2021 Tier -1)

{(a - b) ÷ 4}³ = c

{(24 - 12) ÷ 4}³ ⇒ (3)³ = 27

{(36 - 13) ÷ 4}³ ⇒ (4)³ = 64

{(32 - 24) ÷ 4}³ ⇒ (2)³ = 8

Hence, "8" is the correct answer.

{(1st number × 3) - (2nd number × 4)} = 3rd number

First row → {(67 × 3) - (25 × 4)} ⇒ 201 - 100 = 101

Second row → {(55 × 3) - (17 × 4)} ⇒ 165 - 68 = 97

Third row → {(45 × 3) - (19 × 4)} ⇒ 135 - 76 = 59

Hence, "59" is the correct answer.

a × 2 - (b ÷ 5) = c
First row: (12 × 2 -  25 ÷ 5) = 24 - 5 = 19
Second row: (35 × 2 - 50 ÷ 5) = 70 - 10 = 60
Third row: (24 × 2 - 70 ÷ 5) = 48 - 14 = 34

In first row → {(58 + (-28)} × 3 ⇒ 30 × (-3) = -90

In second row → {(-17 + 21) × 3} ⇒ 4 × (-3) = -12

Similarly,

For third row → {(-8 + (-7)) × 3 ⇒ -15 × (-3) = 45

Hence, "45" is the correct answer.

{(First no. ÷ 2) + (Second no. ÷ 3)}  = 3rd number

First row → {(32 ÷ $2)\; +\; (51\; ÷\; 3)\}\; \Rightarrow \; 16\; +\; 17\; =\; 33$

Second row → {(28 ÷ $2)\; +\; (33\; ÷\; 3)\}\; \Rightarrow \; 14\; +\; 11\; =\; 25$

Similarly,

Third row → {(16 ÷ $2)\; +\; (27\; ÷\; 3)\}\; \Rightarrow \; 8\; +\; 9\; =\; 17$

Hence, "17" is the correct answer.

(a, b, c) → a³ + b² = c

(2, 3, 17) → 2³ + 3² ⇒ 8 + 9 = 17

(4, 6, 100) → 4³ + 6² ⇒ 64 + 36 = 100

Similarly,

(5, 2, ?) → 5³ + 2² ⇒ 125 + 4 = 129

Hence, "129" is the correct answer.

(a × b) - 3 = c

{(5 × 16) - 3} = 77,

{(8 × 19) - 3} = 149

{(13 × 12) - 3} = 153

Hence, "153" is the correct answer.

(13 - 8)² ⇒ 5² = 25

(7 - 12) ⇒ (-5)² = 25

Similarly,

(15 - 9) ⇒ 6² = 36

Hence, "36" is the correct answer.

(b + c) = a

91 + 71 = 162

126 + 92 = 218

Similarly,

79 + ? = 194 ⇒ ? → 115

Hence, "115" is the correct answer.