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

In each diagram, read the upper and lower pairs of numbers as 2 digit values and add these together to give the result written at the top.

15 + 22 = 37.
38 + X = 92.
X = 92 - 38 = 54.
Missing Element = 4.

Working in rows, add the left and right hand values together and subtract 3 to give the number in the center of each row. So,

Row wise : 1st column number + 3rd column number - 3 = 2nd column number
1st row : 7 + 8 - 3 = 12
2nd row : 1 + 6 -3 = 4
Similarly last row : 12 + X - 3 = 13.
X = 4.

Add together the four outer numbers of each grid. This answer is the central number of the grid one place further clockwise. So,

8 +3 + 6 + x = 21
x = 21 - 17 = 4
Missing Element = 17.

Working in columns, the sum of the numbers in each column equals 23. So,

9 + 3 + 1 + x = 23
x = 10.
Missing Element = 23.

Add together numbers in corresponding segments of the outer four squares. The answer is placed in the diagonally opposite segment of the middle square.

Split the diagram into 2 halves vertically, each 3 columns wide. Numbers in the left hand half follow the sequence of cubed numbers, from 64 to 729, and numbers in the right hand half follow the sequence of squared numbers, from 121 to 256.

In each diagram, the central value equals the sum of the left and right hand numbers, minus the sum of the upper and lower numbers. So,

(9 + 13) - (4 + x) = 16
22 - 4 -x = 16
x = 18 - 16
x = 2.

In each shape, use the left and right hand numbers as a source. The upper central number equals the sum of the left and right hand numbers, the middle central number equals the product of the left and right hand numbers, and the lower central number equals the difference between the left and right hand numbers.

Logic (Row-wise):
Central Number = Difference of the sum of the odd numbers and sum of the even numbers in the row.

So,
X = 7 - 2 = 5.
Missing Element = 5.

Starting with the top left segment, and moving clockwise around the circle, numbers follow the sequence of square numbers, from 121 to 256.

11* 11 = 121.
12 * 12 = 144.
13 * 13 = 169.
14 * 14 = 196.
15 * 15 = 225.
16 * 16 = 256.
Missing Element = 196.