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If n is a positive integer, is the value of b - a at least twice the value of 3^n - 2^n?
(1) a = 2^(n+1) and b = 3^(n+1)
(2) n = 3
Answer: A
Source: official guide
(1) a = 2^(n+1) and b = 3^(n+1)
(2) n = 3
Answer: A
Source: official guide
