Question

Tick (✓) the correct answer
Which of the following is a pythagorean triplet?
(a) (2, 3, 5)
(b) (5, 7, 9)
(c) (6, 9, 11)
(d) (8, 15, 17)

Answer 1

(d) (8,15,17)

This can be understood from the property of Pythagorean triplets. According to this property, for a natural number m, $(2m,m^2-1,m^2+1)$ is a Pythagorean triplet.
Here, m = 4
2m = 8
m² - 1=15
and m² + 1 = 17