Each of the following questions has a Magical matrix with question mark/s. Replace the question mark/s by choosing the correct response from amongst the alternatives given.

Options

A. a.9
B. b.7
C. c.15
D. d.11

Answer

B

Explanation

The pattern is as follows:
In the first row, `(13)^2 = (12)^2 + (5)^2,`
In the second row, `(17)^2 = (15)^2 + (8)^2`,
In the fourth row, `(29)^2 = (21)^2 + (20)^2`
Let the missing number be x then, `(25)^2 = (24)^2 + x^2`
or, `x^2 = (25)^2 - (24)^2 ` or, x = 7
Therefore, in the third row, missing number = 7