Latest Accenture Aptitude Question SOLUTION: Q. 2 boxes, 32 black n 31 red balls the probability of getting black ball is maximum the maximum probability is

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Q. 2 boxes, 32 black n 31 red balls the probability of getting black ball is maximum the maximum probability is

Asked In Accenture janvi sahu (10 years ago)

Solved chirayu thakuria Read Solution (6)

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Read Solution (6) :

chirayu thakuria  (10 years ago)

to maximize the probability we can send all but 1 black balls to other box making probability

1/2 (ie chosing one box) * 1(no. of black balls in it) + 1/2*31/62 (as we have no 31 black and 31 red balls in it)

finally we have 1/2*1 + 1/2*1/2 = 3/4

Is this solution Helpfull? Yes (28) | No (3)  

Rashmi bharti  (10 years ago)

The ans is 0.75.
we will keep one black ball in one box so that the probability of getting that is=1/2*1=1/2
Now rest of 31 black ball will be placed in the other box so that to get the maximum probability and it is=1/2*31/62
So the maximum prob of getting black ball is=1/2+1/2*31/62=0.75

Is this solution Helpfull? Yes (19) | No   

Rahul Agrawal  (10 years ago)

1/2+1/2*31/62=3/4

Is this solution Helpfull? Yes (5) | No (5)  

Rakesh  (10 years ago)

probability=(1/2)*(1/31)=1/62.

Is this solution Helpfull? Yes (4) | No (22)  

vivek kumar  (10 years ago)

(1/2)*(0/31)+(1/2)*(32/32)=0+(1/2)=1/2

Is this solution Helpfull? Yes (4) | No (10)  

Jayesh Ghanekar  (8 years ago)

3/4 is the correct ans

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