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For positive integers n, the integer part of the nth term of sequence A equals n, while the infinite decimal part of the nth term is constructed in order out of the consecutive positive multiples of n, beginning with 2n. For instance, A_1 = 1.2345678..., while A_2 = 2.4681012... The sum of the first seven terms of sequence A is between:
A. 28 and 29
B. 29 and 30
C. 30 and 31
D. 31 and 32
E. 32 and 33
[spoiler]OA=C[/spoiler]
Source: Manhattan GMAT
A. 28 and 29
B. 29 and 30
C. 30 and 31
D. 31 and 32
E. 32 and 33
[spoiler]OA=C[/spoiler]
Source: Manhattan GMAT
