Three unbiased coins are tossed together. What is the probability of obtaining at most two heads?

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A 1/8
B 3/8
C 7/8
D 1/2

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Answer: C. 7/8

• Answer: C) 7/8
• Explanation: Total outcomes = 8. "At most two heads" means getting 0, 1, or 2 heads. The only outcome excluded is getting all 3 heads (HHH). Therefore, there are 7 favorable outcomes. Probability = 7/8.

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Three unbiased coins are tossed together. What is the probability of obtaining at most two heads?

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