Rosalie tosses a coin a number of times and counts the total number of times the coin lands tail-side up. How many times

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Rosalie tosses a coin a number of times and counts the total number of times the coin lands tail-side up. How many times does she toss the coin?

1. The chance that the coin lands tail-side up exactly once is between 0.1 and 0.2.
2. The chance that the coin lands head-side up exactly once is the same as the chance that the coin lands tail-side up exactly once.

Answer: A

Source: Princeton Review