Which of the following integers can be written as both the sum of 5 consecutive odd integers and 7 consecutive odd integers?

Correct answer marked below

140

215

525

Correct

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What this question tests

Your command of divisibility, primes, factors, parity, and how the GMAT tests properties of integers.

Forgetting that 1 is not prime, that 0 is divisible by every integer, or that negative numbers flip your assumptions.