Which of the following could represent length of sides of a triangle?

3, 4, 5

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1, 2, 3

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2, 4, 6

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All of these

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Solution

The correct option is A
3, 4, 5

For a geometrical figure to be a triangle, the sum of side lengths of any two sides must be greater than the third side. Otherwise, a triangle could not be formed from those side lengths. Here, except option A, none of the other triplets satisfy the above theorem.

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