Q. 215.0( 2 Votes )

Two balls are dra

Answer :

Given an urn contains 10 black balls and 8 red balls


Probability of getting red ball=


Probability of getting black ball=


(i) both balls are red


P(getting two getting red balls)=P(R)*P(R)



(ii) first balls is black and second is red


P(first balls is black and second is red)=P(B)*P(R)


(iv) one of them is black and other is red.


P(one of them is black and other is red)=P(B)P(R)+P(R)P(B)



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