A bag contains 5 red balls and 7 blue balls Two balls are drawn at random without replacement and th...........

Quantitative Aptitude ( CCS) Probability

A bag contains 5 red balls and 7 blue balls. Two balls are drawn at random without replacement, and then find the probability of that one is red and other is blue?

33/65

35/66

37/66

41/65

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Explanation:

Answer – 35/66
Explanation :
(First red ball is drawn and then blue ball is drawn) + (first blue ball is drawn and then red ball is drawn)
(5/12)*(7/11) + (7/12)*(5/11) = 35/66