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Nbr consequtive zeros in 60! in MGMAT CAT

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backha
 Post subject: Nbr consequtive zeros in 60! in MGMAT CAT
 Post Posted: Fri Mar 04, 2011 5:46 pm 
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Students


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If 60! is written out as an integer, with how many consecutive 0’s will that integer end?

the answer is: 14.

But 60! = 8.32098711 × 10^81 according to google, so how does it become 14 trailing zeros?
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tim
 Post subject: Re: Nbr consequtive zeros in 60! in MGMAT CAT
 Post Posted: Fri Mar 04, 2011 9:42 pm 
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ManhattanGMAT Staff


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Location: Southwest Airlines, seat 21C
because Google rounded off. this is why you cannot just rely on a computational aid to do the thinking for you..

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Tim Sanders
Manhattan GMAT Instructor
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