Which of the following is a Pythagorean triplet ?

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A (2,3,5)
B (5,7,9)
C (6,9,11)
D (8,15,17)

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Answer: D. (8,15,17)

In a Pythagorean triplet, the squares of the two smaller numbers add up to the square of the largest. 8^2 + 15^2 = 64 + 225 = 289 = 17^2. For (2,3,5), 4 + 9 = 13, which is not 25.

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Which of the following is a Pythagorean triplet ?

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