2001 AMC 12 Problems/Problem 5
Problem
What is the product of all positive odd integers less than ?
Solution
Therefore the answer is .
Solution 2(Make the problem easier)
If you did not see the pattern.
then solve a easier problem
What is the product of all positive odd integers less than ?
1(3)(5)(7)(9) = 945
we have
but now we have
which expression equals 945
See Also
2001 AMC 12 (Problems • Answer Key • Resources) | |
Preceded by Problem 4 |
Followed by Problem 6 |
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 AMC 12 Problems and Solutions |
The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions.