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anonymous
 4 years ago
A fair coin is flipped four times. What is the probability of getting heads at least once? Write your answer as a simplified fraction.
anonymous
 4 years ago
A fair coin is flipped four times. What is the probability of getting heads at least once? Write your answer as a simplified fraction.

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0pls use the complement approach

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0That's what I would have thought anyway. What's the probability of not getting heads at all?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ah the probability is getting all tails

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0it is 1/2*1/2*1/2*1/2

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Yes, that's correct. Now, there are only two possibilities: Either we get no heads or at all, or we get at least one. So, since the probabilities must add to one, what do we get?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0p(of having atlesat one head)=1p(of having no head)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Hahah well you handled that fine

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0is there any algorith to solve probability ques

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0No, they need to be solved on a casebycase basis.

Directrix
 4 years ago
Best ResponseYou've already chosen the best response.0You can use Binomial Probability Distributions to solve the problem. It is an algorithm of sorts. P(at least 1 H) = 1  P(0H) = 1  C(4,0) (1/2)^0 (1/2)^4 = 1  1 (1/16) = 15/16. Note that C(4,0) is combinatorial notation for 4 choose 0. Check out this video on binomial probabilities: http://www.youtube.com/watch?v=xNLQuuvE9ug

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0what is a combinatoral notation?

Directrix
 4 years ago
Best ResponseYou've already chosen the best response.0http://mathworld.wolfram.com/Combination.html Also, http://mathworld.wolfram.com/Combinatorics.html

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0got it u are taking about combination notation of nCr.....

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0murray what is the other notations for combinations

Directrix
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1327912574413:dw

cristiann
 4 years ago
Best ResponseYou've already chosen the best response.0You should get yourself used to think in terms of "events". "the probability of getting all tails" is (1/2)^4 because the events are independent: the event of getting a tail at one throw doesn't affect the event of getting a tail at another throw....

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0thanx cristann ....is this rule applicable in a pack of cards?
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