41 6)247 24 7 6 1
I got a remander of 1, so r is 1
20 12)247 24 7 0 7
I got a remainder of 7, so s is 7
Since r is 1, and s is 7, then r - s = 1 - 7 = -6 So the answer is -6, which is choice (a) Edwin