How many 0s at the end of 1000!? What is the first non zero digits from the right?


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Question Number 2387 by prakash jain last updated on 18/Nov/15

$How many 0 s at the end of 1000! ?$ $What is the first non zero digits from the right ?$
Commented by prakash jain last updated on 18/Nov/15

$Number of zero can be computed using$ $\frac{1000}{5} + \frac{1000}{25} + \frac{1000}{125} + \frac{1000}{625} = 249$ $What is the appropriate method for computing$ $the first non zero digit ?$
Commented by Yozzi last updated on 18/Nov/15

$W h a t i s^{'} 1000! ?^{'} ? I s i t^{'} 1000! ?^{'} ?$
Commented by prakash jain last updated on 19/Nov/15

$1000 f a c t o r i a l .$
Commented by RasheedAhmad last updated on 19/Nov/15

$A c c o r d i n g t o c a l c u l a t i o n o f$ $M r p r a k a s h j a i n t h e r e a r e 249$ $z e r o s o n t h e r i g h t o f 1000!$ $T h e n w h a t a b o u t 250^{t h} d i g i t$ $W i l l t h i s n o t b e n o n z e r o [?]$ $I f I a m r i g h t t h e n$ $F i r s t d e t e r m i n e n u m b e r o f$ $z e r o s, i f t h i s i s k t h e n {(k + 1)}^{t h}$ $d i g i t i s n o n z e r o f r o m r i g h t .$
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