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Admissions Success Stories divisors of 21,000

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kevincanspain GMAT Instructor
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divisors of 21,000

Post Mon Sep 18, 2017 12:39 am
I'm developing new questions for a GMAT course and wanted some thoughts on this one:

How many positive divisors of 21,000 have exactly two prime factors, for example 100?

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Last edited by kevincanspain on Mon Sep 18, 2017 7:02 am; edited 1 time in total

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Post Mon Sep 18, 2017 5:45 am
kevincanspain wrote:
I'm developing new questions for a GMAT course and wanted some thoughts on this one:

How many positive divisors of 21,000 have exactly two prime factors?
It's a great idea for a question.
You might add some wording to specify whether a number like 36 satisfies the condition of having exactly two prime factors.

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