1.

Let a1 , a2, ... , a52 be positive integers such that a1 < a2 < ... < a52 . Suppose, their arithmetic mean is one less than the arithmetic mean of a2 , a3 , ..., a52 . If a52 = 100, then the largest possible value of a1 is

A. 20
B. 23
C. 45
D. 48
Answer» C. 45


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