CBSE Class 12-science Answered
It is about balls in bags.
Asked by | 18 Mar, 2008, 10:21: AM
Expert Answer
Soln:
Any two balls can be selected from the bag in 12C2 ways
Takig two balls could be first defective second not defective or first not defective but second defective then it can be done in 2* 8C1 * 4C1
So the probability is 2* 8C1 * 4C1 /12C2 = 32/33
Answered by | 27 Jun, 2008, 10:40: AM
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