apply Pythagorean theorem \[\huge\rm a^2 +b^2=c^2\] replace a b c by their values if both sides are equal then yes thse 3 numbers form a right triangle
remember : c is the longest side of right triangle so for first one c=7 plug in\[\huge\rm 5^2 +6^2 =7^2\] both sides are equal ?
no both sides arent equal right?
try other numbers
if you get equal sides then that would be your answer
15, 20, 25 this is one
yes right that would form a right traingle
is that the one one that works cause thats the only on i got
there is one more
&& 8 15 17 right