Each week Manhattan GMAT posts a GMAT question on our blog and follows up with the answer the next day. Are you up for the challenge?
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, A1 = 1.2345678…, while A2 = 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