Missing Number (SSC CHSL 2019 Tier -1)

The pattern followed here is:

First number+ (Second number - Third number) = Fourth number

2+(8-5) =5

9+(10-3) =16

7+(8-1) =14

Hence, "14" is the correct answer.

(First number)² + (Second number) = (Third number)

131 = (5)² + 6 = 125 + 6

348 = (7)²   + 5 = 343 +5

? = (9)² + 8 = 729 +8 = 737

Hence, "737" is the correct answer.

Hence, "J" is the correct answer.

(First number)² - (Second number)³ = Third number
(4)² - (1)³ = 16 - 1 = 15
(7)² - (3)³ = 49 - 27 = 22
Similarly, (?)² - (4)³ = 57
⇒ (?)² - 64 = 57 ⇒ (?)² = 57 + 64 = 121
⇒ ? = √121 = 11

Hence, "11" is the correct answer.

Here, row wise:
10 × 2 = 20, 20 - 2 × (2 - 1) = 18
30 × 3 = 90, 90 - 3 × (3 - 1) = 84

4 x 68 = 272, 272 - 4 x (4-1) = 260

The pattern followed here is:

(First number) +3 = Second number *4 =Third number

9+3 = 12*4 =48

17+3 = 20*4 =80

33+3 = 36*4 =144

Hence, "144" is the correct answer.

(Third row first number + Second row first number) = (Total number)²+16 = (First row First number)

(7 + 3)² = 10² = 100 + 16 = 116
(8 + 4)² = 12² = 144 + 16 = 160
(13 + 2)² = 15² = 225 + 16 = 241

Hence, "241" is the correct answer.

(1st number ×  2nd number) - [1st number × (1st number-1)]

In first row: (3 × 30) - 3 ×(3-1) = 90-6 = 84

In second row: (2 x 10) - 2 (2-1) = 20-2 = 18

Similarly, In the third row: (4 x ?) - 4 (4-1) = 260 => 4 x ? = 260 + 12 = ? = 272/4 = 68

Hence, "68" is the correct answer.