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# How many zeros are the end of ?

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Current Student
Joined: 03 Sep 2012
Posts: 380
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
1
19
00:00

Difficulty:

15% (low)

Question Stats:

74% (01:14) correct 26% (01:18) wrong based on 1338 sessions

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How many zeros are at the end of 380! ?

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

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 ..

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Math Expert
Joined: 02 Sep 2009
Posts: 52230
How many zeros are the end of ?  [#permalink]

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15 Nov 2012, 06:41
3
9
##### General Discussion
Manager
Joined: 21 Jul 2017
Posts: 192
Location: India
Concentration: Social Entrepreneurship, Leadership
GMAT 1: 660 Q47 V34
GPA: 4
WE: Project Management (Education)
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
Intern
Joined: 26 Dec 2016
Posts: 29
Re: How many zeros are the end of ?  [#permalink]

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13 Jan 2018, 14:47
Math Expert
Joined: 02 Sep 2009
Posts: 52230
Re: How many zeros are the end of ?  [#permalink]

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13 Jan 2018, 14:57
1
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Status: QA & VA Forum Moderator
Joined: 11 Jun 2011
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Re: How many zeros are the end of ?  [#permalink]

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14 Jan 2018, 08:25
vomhorizon wrote:
How many zeros are at the end of 380! ?

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

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 ..

$$\frac{380}{5} = 76$$
$$\frac{76}{5} = 15$$
$$\frac{15}{5} = 3$$

So, the total number of 0's in the end of 380! is 76+15+ 3 = 94 , answer will be (C)
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Re: How many zeros are the end of ? &nbs [#permalink] 14 Jan 2018, 08:25
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# How many zeros are the end of ?

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