Here’s another question that is looking for a yes or no answer. Statement (1) allows for both
positive and negative values of both s and r, so we cannot tell if s = r. Statement (1) is not sufficient;
cross off A and D.
Statement (2) just tells us that s is a positive number; we don’t know anything about r at all and
cannot tell if they are equal; statement (2) alone is not sufficient. Let’s eliminate B.
What if we combine the two? Statement (2) tells us that s is positive, but r could still be either positive
or negative. We still cannot tell if they are equal, so the answer is E.