Missing Number – Railway Reasoning part – 3

Total Questions: 50

1. Find the missing number to complete the following sequence: [RRB NTPC 02/02/2021 (Evening)]

Correct Answer: (c) 20
Solution:

Logic - sum of the opposite face number is equal.
16 + 14 = 17 + 13 ⇒ 30 = 30
Similarly , 32 + 17 = 49
49 - ( 29 + x) ⇒ x = 20

2. Find the missing number to complete the following sequence: [RRB NTPC 02/02/2021 (Evening)]

Correct Answer: (a) 240
Solution:

7 × 2 × 9 = 126 similarly, 6 × 5 × 8 = 240

3. Find the missing number to complete the following sequence: [RRB NTPC 02/02/2021 (Evening)]

Correct Answer: (d) X
Solution:

F + 4 = J , J + 3 = M , M + 4 = Q , Q + 3 = T , T + 4 = X

4. Find the missing number to complete the following sequence: [RRB NTPC 02/02/2021 (Evening)]

Correct Answer: (b) M
Solution:

Opposite face value used . F is opposite to U similarly N is opposite to M.

5. Find the missing number to complete the following sequence: [RRB NTPC 04/02/2021 (Morning)]

Correct Answer: (c) 15
Solution:

6. Find the missing number to complete the following sequence: [RRB NTPC 04/02/2021 (Evening)]

Correct Answer: (c) 28
Solution:

7. Find the missing number to complete the following sequence: [RRB NTPC 04/02/2021 (Evening)]

Correct Answer: (b) 19
Solution:

Logic :- In column wise
4 × 5 − 6 = 14
5 × 4 − 4 = 16
6 × 4 − 5 = 19

8. Find the missing number to complete the following sequence: [RRB NTPC 08/02/2021 (Morning)]

Correct Answer: (d) 2
Solution:

In 1st fig. - 12 + 3 ( Rectangle ) = Number 15 in star
In 2nd fig. - 9 + 12 ( Rectangle ) = Number 21 in star
In 3rd fig - 8 + 14 ( Rectangle ) = Number 22 in star

9. Find the missing number to complete the following sequence: [RRB NTPC 08/02/2021 (Morning)]

Correct Answer: (a) 2
Solution:

Logic :- Sum of all the digit in each column = 15

15  15  15  15  (add)
⇒ 7 + 4 + ? + 2 = 15
⇒ 13 + ? = 15 ⇒ ? = 2

10. Find the missing number to complete the following sequence:

Correct Answer: (c) 17
Solution:

Logic - 18 + 7 = 8 + 17
Similarly , 18 + 13 = x + 14 , x = 17