What is the units digit of the expression 14^7−15^4?\nOptions:\n(A)  0\n(B)  8\n(C)  4\n(D)  6\n(E)  3 Stream of consciousness first, then make a decision:
User
I think answer on this one should be B too. Since we know that 14^7>15^4, as Will said one should always check if the number is positive.
Thus, the answer is (B).
Assistant