# Question: Prime Divisors

## Comment on Prime Divisors

### If it asks for just "how many

If it asks for just "how many prime factors?" would it then be the case that the answer is 6? or does "prime factors" imply unique factors?
Thanks!

### Good question. The word

Good question. The word "different" implies "unique."

### Hi Brent,

Hi Brent,
So if the question asked for how many prime factors does 8500 has, is the answer 6 ?

### I don't think the test-makers

I don't think the test-makers would ask that question. It seems too ambiguous to me.

### Dear Sir

Dear Sir

If a is a repeating decimal and k • a is a terminating decimal, which of the following is a possible value of k?

2
3 correct
4
5

Regards

### Choose some nice numbers that

Choose some nice numbers that meet the given conditions.

One repeating decimal that comes to mind is 0.33333... (this repeating decimal is equal to 1/3)

So, let's say a = 0.33333...

If we multiply a by 3, we get 1, which is a terminating decimal.

So, if k = 3, then both conditions are met (a is a repeating decimal and ka is a terminating decimal)

Thank you sir.

### Hi Brent! Could you explain

Hi Brent! Could you explain this question? https://gre.myprepclub.com/forum/x-2-is-divisible-by-both-40-and-75-if-x-has-exactly-1997.html

Why is E not the right answer?