2011 AMC 8 Problems/Problem 15
Problem
How many digits are in the product ?
Video Solution
https://youtu.be/rQUwNC0gqdg?t=440
Solution
That is one followed by ten
's, which is
digits.
Solution 2
4^5 has 4 digits while 5^10 has 7 digits. This means that 4^5 x 5^10 has a total of 7+4, 11 digits.
See Also
2011 AMC 8 (Problems • Answer Key • Resources) | ||
Preceded by Problem 14 |
Followed by Problem 16 | |
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