If each term in the sum a1 + a2 + a3 +…+ an is either 7 or 77 and the sum equals 350, which of the following could be equal to n?
A. 38 B. 39 C. 40 D. 41 E. 42 Stumped by this GMAT sequence puzzle from the GMAT Prep tests 1 and 2? We’ve got you covered! We’ll do a quick overview on sequences so you have a sense for what this means: If each term in the sum a1 + a2 + a3 […]