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# Number Properties - Factorial

Author Message
Intern
Joined: 15 Sep 2017
Posts: 20
GPA: 3.4

### Show Tags

31 Dec 2017, 11:18
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

### HideShow timer Statistics

How many zeroes are there at the end of the number N, if N = 100! + 200! ?

A) 73
B) 49
C) 20
D) 48
E) 24

Answer is 24 because we take only 100! into our consideration.

1. 5! + 500!?
2. 50! + 200!

I want to know the procedure of finding the zeroes in factorial.

--== Message from the GMAT Club Team ==--

THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

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_________________

Tashin

Math Expert
Joined: 02 Sep 2009
Posts: 52327
Re: Number Properties - Factorial  [#permalink]

### Show Tags

31 Dec 2017, 11:20
How many zeroes are there at the end of the number N, if N = 100! + 200! ?

A) 73
B) 49
C) 20
D) 48
E) 24

Answer is 24 because we take only 100! into our consideration.

1. 5! + 500!?
2. 50! + 200!

I want to know the procedure of finding the zeroes in factorial.

This question is discussed here: https://gmatclub.com/forum/how-many-zer ... 19876.html In case of questions please post in that thread ONLY.
_________________
Math Expert
Joined: 02 Sep 2009
Posts: 52327
Re: Number Properties - Factorial  [#permalink]

### Show Tags

01 Jan 2018, 09:17
How many zeroes are there at the end of the number N, if N = 100! + 200! ?

A) 73
B) 49
C) 20
D) 48
E) 24

Answer is 24 because we take only 100! into our consideration.

1. 5! + 500!?
2. 50! + 200!

I want to know the procedure of finding the zeroes in factorial.

--== Message from the GMAT Club Team ==--

THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

_________________
Re: Number Properties - Factorial &nbs [#permalink] 01 Jan 2018, 09:17
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