Missing Number (SSC CGL 2021 Tier -1)

Hence, "24" is the correct answer.

In Row → [(a + 1) × {(b + 1) ÷ 2}] = c

In first row → [(14 + 1) × {(21 + 1) ÷ 2}] ⇒ {15 × (22 ÷ 2)} ⇒ 15 × 11 = 165

In Third row → [(10 + 1) × {(17 + 1) ÷ 2}] ⇒ {11 × (18 ÷ 2)} ⇒ 11 × 9 = 99

Similarly,

In Second row → [(13 + 1) × {(19 + 1) ÷ 2}] ⇒ {14 × (20 ÷ 2)} ⇒ 14 × 10 = 140

Hence, "140" is the correct answer.

In a column → {(a × b) -  2} = c

In First column → {(9 × 5) -  2} ⇒ 45 - 2 = 43

In Second column → {(7 × 4) -  2} ⇒ 28 - 2 = 26

Similarly,

In Third column → {(9 × 7) -  2} ⇒ 63 - 2 = 61

Hence, "61" is the correct answer.

In Row → [{(a + b) × 5 } + b] = c

In First row → [{(8 + 6) × 5} + 6] ⇒ {(14 × 5) + 6} ⇒ 70 + 6 = 76

In Third row → [{(7 + 13) × 5} + 13] ⇒ {(20 × 5) + 13} ⇒ 100 + 13 = 113

Similarly,

In Second row → [{(12 + 10) × 5} + 10] ⇒ {(22 × 5) + 10} ⇒ 110 + 10 = 120

Hence, "120" is the correct answer.

In Row → {(a - 2) × b} = c

In First row → {(12 - 2) × 7} ⇒ 10 × 7 = 70

In Second row → {(15 - 2) × 6} ⇒ 13 × 6 = 78

Similarly,

In Third row → {(11 - 2) × 9} ⇒ 9 × 9 = 81

Hence, "81" is the correct answer.

In row → {a × (b ÷ 4)} = c

In First row → {13 × (16 ÷ 4)} ⇒ 13 × 4 = 52

In Second row → {15 × (24 ÷ 4)} ⇒ 15 × 6 = 90

Similarly,

In Third row → {23 × (36 ÷ 4)} ⇒ 23 × 9 = 207

Hence, "207" is the correct answer.

Hence, "3" is the correct answer.