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# How many zeros are the end of ?

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Senior Manager
Joined: 03 Sep 2012
Posts: 363

Kudos [?]: 257 [0], given: 37

Location: United States
Concentration: Healthcare, Strategy
GMAT 1: 730 Q48 V42
GPA: 3.88
WE: Medicine and Health (Health Care)
How many zeros are the end of ? [#permalink]

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15 Nov 2012, 06:23
13
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00:00

Difficulty:

15% (low)

Question Stats:

69% (00:51) correct 31% (00:46) wrong based on 1167 sessions

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How many zeros are at the end of 380! ?

(A) 90
(B) 91
(C) 94
(D) None
(E) 95

[Reveal] Spoiler:
In order to find the number of zeros we have to find out the number of 5's and 2's , because no. of 5's will be less then the number of 2's ..
[Reveal] Spoiler: OA

_________________

"When you want to succeed as bad as you want to breathe, then you’ll be successful.” - Eric Thomas

Kudos [?]: 257 [0], given: 37

Math Expert
Joined: 02 Sep 2009
Posts: 42583

Kudos [?]: 135540 [3], given: 12697

How many zeros are the end of ? [#permalink]

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15 Nov 2012, 06:41
3
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Kudos [?]: 135540 [3], given: 12697

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Joined: 09 Sep 2013
Posts: 14869

Kudos [?]: 287 [0], given: 0

Re: How many zeros are the end of ? [#permalink]

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25 Jul 2014, 10:54
Hello from the GMAT Club BumpBot!

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Kudos [?]: 287 [0], given: 0

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Kudos [?]: 287 [0], given: 0

Re: How many zeros are the end of ? [#permalink]

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30 Aug 2015, 14:14
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Kudos [?]: 287 [0], given: 0

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Joined: 26 Jul 2016
Posts: 31

Kudos [?]: -16 [0], given: 10

Location: India
Concentration: Operations, Entrepreneurship
Schools: Tepper '19
GPA: 3.69
WE: Analyst (Manufacturing)
Re: How many zeros are the end of ? [#permalink]

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06 Oct 2016, 11:27
Bunuel wrote:

HELLO BUNNEL, THERE WAS A FORMULA I SAW ON GMATCLUB FORUM IN WHICH TRAILING ZEROS COULD BE CALCULATED BY INCREASING THE POWERS ON INDIVIDUAL FACTORS OF A NUMBER . FOR EG 100! = 100= 2*2*5*5 = 2^2 + 5^2 NOW WE WILL INCREASE THE POWER BY ONE I.E. 2^3 +5^3 = NOW ADDING THE POWERS = 6 , PERHAPS SOMETHING ON SIMILAR LINES CAN YOU EXPLAIN TO ME THAT CONCEPT?

Kudos [?]: -16 [0], given: 10

Manager
Joined: 21 Jul 2017
Posts: 89

Kudos [?]: 9 [0], given: 67

Location: India
Concentration: Social Entrepreneurship, Leadership
GMAT 1: 650 Q47 V33
GPA: 4
Re: How many zeros are the end of ? [#permalink]

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10 Sep 2017, 04:25
380/5 = 76

76/5= 15

15/5= 3

Sum of these quotients. Answer C

Kudos [?]: 9 [0], given: 67

Re: How many zeros are the end of ?   [#permalink] 10 Sep 2017, 04:25
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# How many zeros are the end of ?

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