Which set of numbers represents a pythagorean triple? 27, 38, 42?

Where are the sets , u gave only one choice

pythagorean theorem: in a right triangle with sides a and b and hypotenuse c, a^2 + b^2 = c^2   where c is the hypotenus 


27, 36, 45
Divide by 9 --> 3, 4, 5 triangle.

3^2  +  4^2  = 5^2  
9 + 16 = 25 

7.666270253x10 raised to the 18th power