In a particular class, the test scores recorded are 50, 35, 48, 35, y, 50, and 35. If y is one of the existing scores and is a multiple of 5, what is the mode for this class?
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this pattern comes up frequently
Thank you very much!
thanks, this one was quick. mode = most frequent, done
kind of a giveaway with 35 as a choice, but I'll take the easy points
What it tests
Your command of divisibility, primes, factors, parity, and how the GMAT tests properties of integers.
Common trap
Forgetting that 1 is not prime, that 0 is divisible by every integer, or that negative numbers flip your assumptions.