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A box contains 5 green ,4 yellow and 3 whitemarbles ,Three marblesaredrawn at random, whatis theprobability thatthey are notof thesamecolour ? |
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Answer» `40//44` `n(S) =""^(12)C_(3)=220` `P=(n(E))/(n(S))=(15)/(220)=(3)/(44)` (it is probability whenall 3 areof same COLOUR ) `therefore ` Requiredprobability`=1-(3)/(44)=(41)/(44)` |
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