SOLUTION: A fair coin is tossed 3 times. Find the probability of obtaining at least one head. a 7/8 b 1/4 c 1/2 d 1/6 e 5/6

Question 286762: A fair coin is tossed 3 times. Find the probability of obtaining at least one head.
a 7/8 b 1/4 c 1/2 d 1/6 e 5/6

Answer by Edwin McCravy(20060) (Show Source): You can put this solution on YOUR website!


P(at least one head) = 1 - P(no heads) =

1 - P(tails 1st AND tails 2nd AND tails 3rd) =

"AND" indicates multiplication:

1 - P(tails 1st)*P(tails 2nd)*P(tails 3rd) =



choice (a)

Edwin

RELATED QUESTIONS
A coin is tossed 3 times. What is the probability of obtaining at least 1... (answered by htmentor)
A coin is tossed 3 times. What is the probability of obtaining at least 1... (answered by richwmiller,stanbon)
A fair coin is tossed 5 successive times . what is the probability that at least one head (answered by stanbon)
Compute the odds in favor of obtaining at least 1 head when a single coin is tossed 6... (answered by MathLover1,ikleyn)
1. a coin is tossed 3 times. find the probability of obtaining A.) heads on the first... (answered by Boreal)
Can someone please help me with these questions I am really stuck. In questions 1-6, the (answered by stanbon)
A coin is tossed n times when n>1. Show that the probability of obtaining at least one... (answered by KMST)
Please help me solve this problem. A coin is tossed 3 times. What is the... (answered by stanbon,subudear)
A fair coin is tossed 6 times, calculate the probability of obtaining at most three... (answered by richwmiller)