Some questions and their alternative answers are given. Select the correct alternative.

(A) (1, 5, 10)
Here 1²+5² ≠ 10²
The square of largest number is not equal to sum of squares of the other two numbers.
So (1, 5, 10) is not a Pythagorean triplet.
(B) (3, 4, 5)
Here 3²+4² = 5²
The square of largest number is equal to sum of squares of the other two numbers.
So (3, 4, 5) is a Pythagorean triplet.
(C) (2, 2, 2)
Here 2²+2² ≠ 2²
The square of largest number is not equal to sum of squares of the other two numbers.
So (2, 2, 2) is not a Pythagorean triplet.
(D) (5, 5, 2)
Here 2²+5² ≠ 5²
The square of largest number is not equal to sum of squares of the other two numbers.
So (5, 5, 2) is not a Pythagorean triplet.
Hence option B is the correct answer.