Question

Having a fair coin i.e. P(Head) = P(Tail) = 0.5, what is the probability of getting a sequence of 3 consecutive tails?

Answer 1

Probability of getting 3 consecutive tails in a fair coin toss:-

P(E)=0.125

Step-by-step explanation:

If we toss an unbiased coin exactly three time we can have 8 outputs possible and those outputs are as following:-

1. HHH
2. HHT
3. HTH
4. HTT
5. THH
6. THT
7. TTH
8. TTT

Out of these 8 outputs we have 1 favorable outcome that is TTT.So the probability of the event is P(E)=1/8

where 8 is total number of outcomes.