2021 JMPSC Accuracy Problems/Problem 14
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Problem
What is the leftmost digit of the product ![\[\underbrace{161616 \cdots 16}_{100 \text{ digits }} \times \underbrace{252525 \cdots 25}_{100 \text{ digits }}?\]](http://latex.artofproblemsolving.com/7/c/c/7cca56c840db1d2457346e67fff42c3701c000fc.png)
Solution
asdf
