Question: Divisor of 86420

Comment on Divisor of 86420

Hi just trying to assess how much time to spend on questions of this type. What level difficulty level would you say this is?
gmat-admin's picture

This is a SUPER HARD question. It's definitely 750+

Hi Brent, if we consider any negative value for n for example n = -2
We get 72/(6^-2) = 72/(1\36) = (72)(36)
This makes 6^-2 a divisor of 72, in the same way for the above ques we can consider any -ve value for n?
gmat-admin's picture

That's a great idea, but we can't say that 6^(-2) a divisor of 72.
Divisors must be INTEGERS, and 6^(-2) = 1/16 (which is not an integer)

Cheers,
Brent

Good question
gmat-admin's picture

I'm glad you like it :-)

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