2004 AMC 12A Problems/Problem 21
From AoPSWiki
Problem
If 
, what is the value of 
?
Solution
This is an infinite geometric series, which sums to 
. Using the formula 
.
See also
| 2004 AMC 12A (Problems • Resources) | ||
| Preceded by Problem 20 | Followed by Problem 22 | |
| 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 | ||
