SOLUTION: Three coins are tossed.what is the probability of getting(a)all heads,(b)two heads,(c)at least one head(d) at least two heads?

Question 1083112: Three coins are tossed.what is the probability of getting(a)all heads,(b)two heads,(c)at least one head(d) at least two heads?
Answer by natolino_2017(77) (Show Source): You can put this solution on YOUR website!
Every toss is independent:
a) P(all heads) =Working cases/ Total cases = 1/(2*2*2) = 1/8
b) P(Two heads) = P(one tail) = working cases/ total cases = 3/8
c) P(at least one head) = 1 - P(none head) = 1 - P(three tails) = 1 - 1/8 = 7/8.
d) P(at least two heads) = P( two heads or all heads) = 3/8 + 1/8 = 1/2.
@natolino_
RELATED QUESTIONS
Find exact probabilities showing all required computation. Five fair coins are tossed.... (answered by reviewermath)

A coin is tossed three times. What is the probability of getting A. Two heads and a tail... (answered by math_helper)

Eight coins are tossed. What is the probability that: a. there is at least one tail? b. (answered by Edwin McCravy)

a coin is tossed 9 times what is the probability of getting ? a)five heads b)at least... (answered by rothauserc)

Suppose a coin is tossed three times: a. What is the probability of getting exactly... (answered by ewatrrr,drvidmar)

In toasting three fair coins at once. what is the probability of getting 1. at most two... (answered by Fombitz)

Use a diagram to list the sample space showing the possible arrangements of heads and... (answered by stanbon)

Three unbiased coins are tossed. What is the probability of getting at most two... (answered by Fombitz)

please help me solve this problem: if three fair coins are tossed, what is the... (answered by Greenfinch)