Missing Number (SSC CPO 2019 Tier -1)

1. Find the missing number? [SSC CPO 09/12/2019 (Morning)]

(a) 15
(b) 25
(c) 22
(d) 23

Correct Answer: (c) 22

Solution:1st Column: 3 + 14 = 17 × 2 = 34

2nd Column 18 + 13 = 31 × 2 = 62

3rd Column angle 27 + 22 = 49 × 2 = 98

2. Find the missing number? [SSC CPO 09/12/2019 (Evening)]

(a) 23
(b) 72
(c) 14
(d) 21

Correct Answer: (d) 21

Solution:(d) Logic :- (in column) (difference between 3rd no. and 2nd no x 1st no. = resultant

In the first column,

(48 ~28)= 20 × 3 = 60

Similarly. (65 ~71)= 6 × 18 = 108

(? ~ 35 )×7=98 ⇒ ?=21

so the answer will be 21.

3. Find the missing number? [SSC CPO 11/12/2019 (Morning)]

(a) 8
(b) 5
(c) 3
(d) 4

Correct Answer: (d) 4

Solution:(d) The Logic is: along row wise

first number/second number =fourth number /third number

18/ ? = 9/2 ⇒ ?=4

So the missing number is 4.

4. Find the missing number? [SSC CPO 11/12/2019 (Evening)]

(a) 350
(b) 530
(c) 529
(d) 550

Correct Answer: (b) 530

Solution:(b) In the first Column, Square of 4 ^ 2 + 3 = 16 + 3 = 19;

In the second Column, square of 18 ^ 2 + 6 = 324 + 6 = 330;

So, in the 3rd Column, 23 ^ 2 + 1 = 529 + 1 = 530

5. Find the missing number? [SSC CPO 12/12/2019 (Morning)]

(a) 8
(d) 15
(b) 12
(c) 13

Correct Answer: (d) 15

Solution:(d) Logic is (In row) :- (First number x Third number) - Third number = second number 255=(18x)-x ⇒ x = 255/17 = 15

So, the missing number is 15.

6. Find the missing number? [SSC CPO 12/12/2019 (Evening)]

(a) 2
(b) 5
(c) 4
(d) 3

Correct Answer: (a) 2

Solution:(a) Logic:- In each column (first number x third number) + fourth number = second number. Similarly, in the 3rd column,

(8x ?)+48=64 ⇒ ?= 16/8 = 2

7. Find the missing number? [SSC CPO 13/12/2019 (Morning)]

(a) 48
(d) 50
(b) 52
(c) 40

Correct Answer: (d) 50

Solution:(d) In the first row, 3 ^ 2 + 2 ^ 2 + 5 ^ 2 = 9 + 4 + 25 = 38

In the 3rd row, 7 ^ 2 + 1 ^ 2 + 2 ^ 2 = 49 + 1 + 4 = 54

Similarly, in the 2nd row, 5 ^ 2 + 3 ^ 2 + 4 ^ 2 = 25 + 9 + 16 = 50

9	28	85
17	52	?
7	22	67

8. Find the missing number? [SSC CPO 13/12/2019 (Evening)]

(a) 157
(b) 154
(c) 150
(d) 165

Correct Answer: (a) 157

Solution:(a) Logic: In each row n : 3 n + 1 = m / 3 m + 1

As, 7 x 3 + 1 = 22 , 22 x 3 + 1 = 67 and so on.. So, answer is 52 x 3 + 1 = 157