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Numerical Ability
Permutation and Combination
A box contains 5 black balls, 4 white balls and 3 red balls. In how many ways can 3 balls be drawn from the box, if at least one red ball is to be included in the draw?
A)144 B)124 C)136 D)152 E)None of these
Read Solution (Total 1)
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- 3c1*9c2+3c2*9c1+3c3
=3*36+3*9+1
=136 - 3 years agoHelpfull: Yes(0) No(0)
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