Question

What is the value of x, if (5, x, 13) is a Pythagorean triple?

• A. 10
• B. 11
• C. 12
• D. 13

Answer 1

The correct option is C 12

Applying the Pythagorean triples rule as $a^2+b^2=c^2$
$5^2+x^2={13}^2$
25 + $x^2$ = 169
$x^2$ = 169 - 25
$x^2$ = 144
Squaring on both the sides, we get
x = 12.