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If 9, 12, 15 is a Pythagorean Triple, which of the following could also be a Pythagorean Triple?

a) 5,7,9
b) 17, 20, 23
c) 36, 48, 60
d) 19, 22, 25

User Areti
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1 Answer

4 votes

Answer:

c) 36, 48, 60

Explanation:

A Pythagorean Triple is a set of positive integers (a, b, c) that follows the rule:


\boxed{a^2+b^2=c^2}

where a < c and b < c.

It always consists of:

  • all even numbers, or
  • two odd numbers and an even number.

When a and b are both even, c is even.

When one of a and b is odd and the other is even, c is odd.

(5, 7, 9) cannot be a Pythagorean Triple since it consists of all odd numbers.

(17, 20, 23) is not a Pythagorean Triple since:


\implies 17^2+20^2=23^2


\implies 289+400=529


\implies 689 \\eq 529

(36, 48, 60) is a Pythagorean Triple since:


\implies 36^2+48^2=60^2


\implies 1296+2304=3600


\implies 3600=3600

(19, 22, 25) is not a Pythagorean Triple since:


\implies 19^2+22^2=25^2


\implies 361+484=625


\implies 845\\eq 625

User SUPARNA SOMAN
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