1998 AHSME Problems/Problem 22
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Contents
[hide]Problem
What is the value of the expression
Solution
Solution 1
By the change-of-base formula, Thus (you might recognize this identity directly) Thus the sum is
Solution 2
Since ,
We add:
See also
1998 AHSME (Problems • Answer Key • Resources) | ||
Preceded by Problem 21 |
Followed by Problem 23 | |
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