The arithmetic mean of all the distinct numbers that can be obtained by rearranging the digits in 1421, including itself, will be

Correct answer marked below

2,222

Correct

2,442

2,592

3,333

2,834

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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.