Three unbaised coins are tossed what is the probility of getting at most 2 heads
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Possible outcomes = HHH, HHT, HTH, THH, TTT, TTH, THT, HTT
No. of possible outcomes = 8
Favourable outcomes = HHT, HTH, THH, TTT, TTH, THT, HTT
No. of favourable outcomes = 7
Probability = No. of favourable outcomes/ No. of possible outcomes
Probability= 7/8
✓ at most means maximum
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