Question

If a = 11 (242) 121, b = 14 (392) 196, c = 13 (?) 169

• A. $338$
• B. $432$
• C. $356$
• D. $590$

Answer 1

The correct option is A $338$

The question shows that a and b have a certain relation. The brackets have the multiple of 2 of the square of the number on the left of the brackets which is written on the right of the brackets. It is simplified as follows-

$11(2\times 121)11\times 11$

$=11\left(242\right)121$

Similarly,

$13(169\times 2)169$

$=13\left(338\right)169$

This means the ? Is 338

Option A is the correct answer.