Question

Three coins are tossed together. Write all the possible outcomes. Now, find the probability of getting at least one tail.

Answer 1

When three coins are tossed, possible outcomes are: 

HHH, HHT, HTH, HTT, THH, THT, TTH, TTT  

Total possible outcomes = 8  

Favorable outcomes for at least one tails = HHT, THH, HTH, HTT, THT, TTH, TTT 

Number of favorable outcomes = 7 

P(at least one tail) = `7/8`