Questions
Assuming the balls to be identical except for difference in colours, the number of ways in which one or more balls can be selected from 10 white, 9 green and 7 black balls is
detailed solution
Correct option is D
(10 + 1)(9 + 1)(7 + 1) – 1 = 11×10×8-1=879Similar Questions
The number of positive integral solutions satisfying the equation is
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