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

2 + 4 + 9 +7 =22
11 + 2 + 6 +3 = 22
5 + 6 + 5 +6 = 22
So,
1 + 4 + x +8 = 22
x = 22 - 8 - 4 -1 = 9

1st Column item in top row - middle item = last column item in bottom row.
2nd Column item in top row - middle item = 2nd column item in bottom row.
3rd Column item in top row - middle item = 1st column item in bottom row.
9 - 2 = 7
8 - 2 = 6
4 - 2 = 2

In each circle, starting at the top left segment, numbers increase, as you move clockwise, by 2 for the upper left circle, 3 for the upper right, 4 for the lower right and 5 for the lower left. So,

Missing Element = 9 + 4 = 13.

7 + 3 = 10/2 = 5
8 + 6 = 14/2 = 7
2 + 10 = 12/2 = 6
So,
4 + 2 = 6/2 = 3.

Row-wise:
289 = 17²
324 = 18²
361= 19².
So, 1 is the correct option.

Reading each row as 3 separate 2-digit numbers, the central number equals the average of the left and right hand numbers. So,

(15 +x)/2 = 48
15 + x = 96
x = 81.
Missing Numbers = 8 ,1.

Reading each pair of numbers as a 2 digit number, they follow the sequence of square numbers from 6 to 9. Thus,

Last row = 9 * 9 = 81.
Missing number = 1.

Taking the top row of circles, numbers in the central circle equal the sum of the numbers in corresponding segments of the left and right hand circles. In the bottom row, numbers in the central circle equal the difference between numbers in corresponding segments of the left and right hand circles.

Starting at the top left, and moving through the diagram in a Z shape, double each number and add 3 to give the next number along. So,

Required number = 2 * 125 + 3 = 253.

Moving to the right, double each number and subtract 3 to give the next number. So,

Missing Number = 27 *2 - 3 = 54 - 3 = 51.