Q.
When two balls are drawn from a bag containing 2 white, 4 red and 6 black balls the chance for both of them to be red is
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a
111
b
611
c
311
d
412
answer is A.
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Detailed Solution
n(A)=C2 4, n(S)=C2 12 P(A)=C2 4C2 12=111
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