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Question

Which of the following forms a Pythagorean triplet?


A

5, 12, 14

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B

8, 15, 16

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C

20, 21, 29

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D

3, 4, 6

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Solution

The correct option is C

20, 21, 29


For any natural numbers to be a Pythagorean triplet, the sum of squares of the two smaller numbers should be equal to the square of the third number.

Here,

202 + 212 = 292

i.e. 400 + 441 = 841

The sum of squares of the two smaller numbers equals the square of the third number and thus they form a Pythagorean triplet.


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