Latest Bank Exam Aptitude Question SOLUTION: a bag contains 5 white,7 red and 8 black balls.if 4 balls are drawn with replacement,what is the probability that all are white

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(#M40031187) BANK EXAM Logical Reasoning question Keep an EYE

a bag contains 5 white,7 red and 8 black balls.if 4 balls are drawn with replacement,what is the probability that all are white

Asked In Bank Exam pratibha Tiwari (10 years ago)

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mahima srivastava  (10 years ago)

(5/20)*(5/20)*(5/20)*(5/20)=1/256

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Mohit Kumar Soni  (10 years ago)

Answer :- 1/256

Solution:-
Total balls in bag= 5+7+8 = 20
Now, Probability of drawing one white ball from bag= 5/20 = 1/4
As balls 4 are drawn one by one with replacement, therefore :-
Probability of drawing four white ball can from bag= 1/4 * 1/4 * 1/4 * 1/4 = 1/256

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