Question

which set ae lengths of RIGHT triangles 2,3,7 4,3,5 10,2,11 7.5,8,9.5

Answer 1

3,4,5

Answer 2

4,3,5

Answer 3

From Mathematica:
a = {{2, 3, 7} , {4, 3, 5}, {10, 2, 11}, { 7.5, 8, 9.5}}
Table[ {a[[i, 1]]^2 + a[[i, 2]]^2 == a[[i, 3]]^2}, {i, 4} ] =
{{False}, {True}, {False}, {False}}
{4, 3, 5}