Construct a right triangle ABC in which ∠C = 90° and ∠B = 45°,
CB = 5 cm.

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

The range would be 13 because you’re finding the difference