In this question, shouldn’t the answer be option C, because Pythagorean triplets should always be integers, and if we assume 12 to be the hypotenuse and solve for third side then the value isn’t an integer. Thus that case becomes invalid, so the only answer left is 30 .
It is not mentioned that the sides of the triangle should be an integer. 5, 12 and 13(hypotenuse) is one of the options but not the only option. Actually, there is one more possibility 5, 10.9087121 and 12 (hypotenuse). That’s why answer is D.
BOOM!