Difference between revisions of "2024 AMC 12B Problems/Problem 6"
(→Solution 3) |
(→Solution 2) |
||
Line 22: | Line 22: | ||
~sidkris | ~sidkris | ||
+ | |||
+ | ==See also== | ||
+ | {{AMC12 box|year=2024|ab=B|num-b=5|num-a=7}} | ||
+ | {{MAA Notice}} |
Revision as of 09:58, 14 November 2024
Contents
Problem 6
The national debt of the United States is on track to reach dollars by . How many digits does this number of dollars have when written as a numeral in base 5? (The approximation of as is sufficient for this problem)
Solution
The number of digits is just . Note that
Hence, our answer is
~tsun26
Solution 2
We see that and . Converting this to base gives us (trust me it doesn't take that long). So the final number in base is with zeroes at the end, which gives us digits. So the answer is .
~sidkris
See also
2024 AMC 12B (Problems • Answer Key • Resources) | |
Preceded by Problem 5 |
Followed by Problem 7 |
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.