Suppose that a and b are two integers, not necessarily distinct, chosen from the set S = 1, 2, 3, · · · , 200. What is the probability that the unit digit of 3a + 7b is 6"Œ?
(A)5/16
(B)3/16
(C)3/17
(D)7/17
(E)3/13
The OA is B.
(A)5/16
(B)3/16
(C)3/17
(D)7/17
(E)3/13
The OA is B.
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Just because something is hard doesn't mean you shouldn't try,it means you should just try harder.
"Keep Walking" - Johnny Walker
Just because something is hard doesn't mean you shouldn't try,it means you should just try harder.
"Keep Walking" - Johnny Walker
