2021 AIME II Problems/Problem 6
Problem
For any finite set , let denote the number of elements in . FInd the number of ordered pairs such that and are (not necessarily distinct) subsets of that satisfy
Solution
Since
, substituting gives us
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See also
2021 AIME II (Problems • Answer Key • Resources) | ||
Preceded by Problem 5 |
Followed by Problem 7 | |
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