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Mathematics 7 Online
OpenStudy (anonymous):

how to solve this

OpenStudy (gorv):

two possibility ...........u get either 2 taltes ...1 tales or zero tales

OpenStudy (gorv):

add probability of these

OpenStudy (anonymous):

its a binomial probability

OpenStudy (gorv):

for 2 tales that is atleast 6 heads 6*(1/2*1/2*1/2*1/2*1/2*1/2*1/2*1/2)

OpenStudy (gorv):

sorry multiplied by 8

hartnn (hartnn):

atleast 6 heads = 6 heads or 7 heads or 8 heads 6heads = (1/2)^6 (1/2)^2 7 heads = (1/2)^7 (1/2) 8 heads = (1/2)^8 just add them

OpenStudy (anonymous):

3/256

OpenStudy (anonymous):

@hartnn

hartnn (hartnn):

yes, that should be correct.

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