Latest TCS Aptitude Question SOLUTION: Out of 2 baga 1st bag has 2black and 4 whitw balls.2nd bag has 4 black and 5 white balls.When 2 balls from the 1st bag has been transferred to the 2nd. what is probability of getti

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Out of 2 baga 1st bag has 2black and 4 whitw balls.2nd bag has 4 black and 5 white balls.When 2 balls from the 1st bag has been transferred to the 2nd. what is probability of getting one white ball when only 1 ball is picked?

Asked In TCS bhavya (10 years ago)

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DINESHBALAJI  (10 years ago)

( prob of transfering 2 white ball and prob of taking one white ball from 2 bag)+
( prob of transfering 2 black ball and prob of taking one white ball from 2 bag)+ ( prob of transferring 1 white ball and 1 black ball and prob of taking one white ball from 2 bag)= (4c2*7c1)+(2c2*5c1)+(4c1*2c1*6c1)/(6c2*11c1)= 19/33

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gaurav arora  (10 years ago)

p1=prob of transfering 2 white ball and prob of taking one white ball from 2 bag=(4C2/6C2)*(7/11)
p2=prob of transfering 2 Black ball and prob of taking one white ball from 2 bag=(2C2/6C2)*(5/11)
p3=prob of transfering 1 white & 1 black ball and prob of taking one white ball from 2 bag=(2C1*4C1/6C2)*(6/11)
probability=p1+p2+p3= 5/165 + 14/55 + 16/55 = 19/33

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pavan  (10 years ago)

9/15
9C1/15C1

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arjit  (9 years ago)

bag1 2 black and 4 white balls
bag2 4 black and 5 white balls

4/4+2=4/6=2/3

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