Difference between revisions of "2022 AMC 8 Problems/Problem 17"
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Revision as of 13:03, 28 January 2022
Problem
If is an even positive integer, the [i]double factorial[/i] notation
represents the product of all the even integers from
to
. For example,
. What is the units digit of the following sum?
Solution
See Also
2022 AMC 8 (Problems • Answer Key • Resources) | ||
Preceded by Problem 16 |
Followed by Problem 18 | |
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.