Assuming the balls to be identical excep...

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

A

630

B

879

C

880

D

629

Text Solution

Verified by Experts

The correct Answer is:

B

Required number of ways
`=(10+1)(9+1)(7+1)-1=880-1=879`

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