The prompt
Estimate the total number of text messages sent in the US on a single major holiday (e.g., New Year's Eve). State your structure and what would change your estimate by 2x.
Concepts this question tests
How to practice it in PrepOS
PrepOS's adaptive queue surfaces this question when you calibrate to a matching target level and your weakest concepts overlap with what it tests. Open the practice simulator and select the round type to start a rep with this prompt.
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