A box contains 5 white and 7 black balls. Two successive drawn of 3 balls are made (i) with replacement (ii) without replacement. The probability…

CA Foundation · Quantitative Aptitude · MTP · September 2024
A box contains 5 white and 7 black balls. Two successive drawn of 3 balls are made (i) with replacement (ii) without replacement. The probability that the first draw would produce white balls and the second draw would produce black balls are respectively.
(A) A. 6 / 321 and 3 / 926
(B) B. 1 / 20 and 1 / 30
(C) C. 35 / 144 and 35 / 108
(D) D. 7 / 968 and 5 / 264

Suggested Answer and Working Notes:

Correct Answer: Option (D)

D. 7 / 968 and 5 / 264

Topics: Part-C: Statistics

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