2024 AMC 12B Problem 4
Problem 4 of 25EasierAlgebraNumber Theory
Balls numbered are deposited in bins, labeled and using the following procedure. Ball is deposited in bin and balls and are deposited in The next three balls are deposited in bin the next in bin and so on, cycling back to bin after balls are deposited in bin (For example, are deposited in bin at step of this process.) In which bin is ball deposited?
Answer choices
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Solution
Step deposits balls, so after step a total of balls have been placed. Since and ball falls in step
The steps cycle through the bins so step uses position Here which is the fourth bin,
Thus, the correct answer is D.