Question

Which of the following sets of numbers could be the sides of a triangle

Answer 1

Longest side must be smaller than the sum of other two smaller sides, so
only 2nd option fits best

In short, Your Answer would be Option B

Hope this helps!

Answer 2

So bascically what you would do is you would do A^2+B^2=C^2 for every single one of them to find which one best fits the equation 6 squared +8 squared =15 squared 36+64=225 so that would be 100 which does not equal 225 therefore A is not the answer. 9 squared+ 13 squared= 17 squared 81+169= 289  250 does not equal 289 so therefore B is not the answer. 2 squared + 3 squared= 6 squared. 4+9=36. 13 does not equal 36 so therefore C is not the answer but because there are no more answers D is left by process of elimination