The average of five results is 46 and that of the first four is 45. The fifth result is?\nOptions:\n(A) 29\n(B) 27\n(C) 29\n(D) 50\n(E) 81 Let's think first. Stream of consciousness:
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5 * 46 – 4 * 45 = 50
So, the answer is (D).
Assistant