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Which of these are Pythagorean triplet whose one of the members is 3.

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3, 4 and 5

3, 6 and 9

2, 3 and 5

1, 2 and 9

answer is B.

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Detailed Solution

We can get Pythagorean triplets by using the general form 2m, m²– 1, m²+ 1.

Let us first take m²– 1 = 3

So, m²= 3 + 1 = 4

which gives m = 2

Therefore, 2m = 4 and m² + 1 = 5

The triplet is thus 3, 4, and 5.

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