SOLUTION: An unfair coin has a probability 0.6 of landing heads. The coin is tossed four times. What is the probability that it lands heads at least once?

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Question 1041727: An unfair coin has a probability 0.6 of landing heads. The coin is tossed four times. What is the probability that it lands heads at least once?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
p = 0.6 is the probability of landing heads

q = 1-p = 1-0.6 = 0.4 is the probability of landing tails

The probability of getting 4 tails in a row is q^4 = (0.4)^4 = 0.4*0.4*0.4*0.4 = 0.0256

Subtract this from 1:
1-0.0256 = 0.9744

The probability of getting at least one head is 0.9744



Final Answer: 0.9744