Missing Number Finding - General Inteligence & Reasoning MCQ Questions and Answers

Answer: Option A

Logic:
Column-Wise
(First Column Element × 4th Column element) - (2nd column element + 3rd Column element) = Last Column Element

(4×2)-(5+3) = 0
(7×4)-(3+4) = 21
(6×5)-(4+4) = 22
(9×5)-(6+5) = 34.

Answer: Option D

Logic:
First Row Element - Third Row Element = Second Row Element.

56 - 44 = 12
65 - 14 = 51
78 - 48 = 30.
Hence, in the missing number should be 51.

Answer: Option B

20 = 8 x 2 + 4
15 = 3 x 2 + 9
Hence,
The number on the blank space,
6 x 2 + 6 = 18.

Answer: Option B

In the first column,
27- 7*2 = 13
In the second column,
144 - 45*2 = 54
So,
in the third column,
68 -32*2 = 4

Answer: Option B

First Method Row-wise Logic:
First element + second element = Third Element.
6 + 9 = 15
8 + 12 = 20
4 + 6 = 10
So, required number is 10.

Second Method
Logic:
Second Row element - first row element = Result * 2 = Third Row Element.
Column 1:
8 - 6 = 2
2 *2 = 4
Column 2:
12 - 9 = 3
3 *2 = 6
Column 3:
20 - 15 = 5
5 * 2 = 10.
Required Number is 10.

Third Method:
In the First row,
6*(3/2)= 9.
6*(5/2) = 15.
In the second row,
8*(3/2) = 12.
8*(5/2) = 20.
hence,
In the third row,
missing number,
= 4*(5/2) = 10.