2002 AMC 8 Problems/Problem 19
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Problem
How many whole numbers between 99 and 999 contain exactly one 0?
Solution
Numbers with exactly one zero have the form 
or 
, where the 
. There are 
such numbers, hence our answer is 
.
Video Solution
https://youtu.be/nctNL-xLImI Soo, DRMS, NM
https://www.youtube.com/watch?v=eAeVBrQ1PQI ~David
Video Solution by WhyMath
See Also
| 2002 AMC 8 (Problems • Answer Key • Resources) | ||
| Preceded by Problem 18 |
Followed by Problem 20 | |
| 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. 
