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05 Apr 2021, 09:35
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Hi All,
I am a little confused about Number of Prime Factors of any number. .
Eg : 12 = 2x2x3 . So the number of Prime factors of 12 are 2 (2 and 3) or 3 (2,2, and 3)?
As per TTP, its 3. Request to the forum to enlighten me please.
I am a little confused about Number of Prime Factors of any number. .
Eg : 12 = 2x2x3 . So the number of Prime factors of 12 are 2 (2 and 3) or 3 (2,2, and 3)?
As per TTP, its 3. Request to the forum to enlighten me please.
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05 Apr 2021, 21:01
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GMATaxe001
There are two terms
1) Distinct prime factors: Only two - 2 & 3. Can be tested on GMAT as there is no ambiguity.
2) Prime factors: Some would say three - 2, 2, 3. But many of us would say that what is the difference in the two 2s. Can same number be a factor twice.
So, I would expect following in GMAT
A) Whenever factors are being asked, mention distinct prime factors to remove ambiguity.
B) May be use the word ‘repetition’ if it wants you to count it twice.
Always every time you will find the word DISTINCT or DIFFERENT, and even if it is missing I am yet to see GMAT looking for repetition.
So 12 would have 2 prime factors or 2 distinct prime factors.
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Quantitative Questions Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
