Question 7

Select the option that will correctly replace the question mark (?) in the given pattern.

Solution

The square of top number is equal to the sum of square of each of the bottom numbers.

Eg :- $$(3)^2+(4)^2=9+16=25=(5)^2$$

and $$(6)^2+(8)^2=36+64=100=(10)^2$$

Similarly, $$(12)^2+(x)^2=(13)^2$$

=> $$x=\sqrt{169-144}=\sqrt{25}=5$$

=> Ans - (D)

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