Difference between revisions of "1991 AJHSME Problems/Problem 13"
5849206328x (talk | contribs) (Created page with '==Problem== How many zeros are at the end of the product <cmath>25\times 25\times 25\times 25\times 25\times 25\times 25\times 8\times 8\times 8?</cmath> <math>\text{(A)}\ 3 \q…') |
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{{AJHSME box|year=1991|num-b=12|num-a=14}} | {{AJHSME box|year=1991|num-b=12|num-a=14}} | ||
[[Category:Introductory Number Theory Problems]] | [[Category:Introductory Number Theory Problems]] | ||
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Latest revision as of 23:07, 4 July 2013
Problem
How many zeros are at the end of the product
![\[25\times 25\times 25\times 25\times 25\times 25\times 25\times 8\times 8\times 8?\]](http://latex.artofproblemsolving.com/8/e/c/8ecd299812638ef3512de02d51d7e0f064dc7410.png)
Solution
Since 
doesn't end in a 
, we can conclude that the product ends in 
zeroes 
.
See Also
| 1991 AJHSME (Problems • Answer Key • Resources) | ||
| Preceded by Problem 12 |
Followed by Problem 14 | |
| 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | ||
| All AJHSME/AMC 8 Problems and Solutions | ||
The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions. 
