First slide

Combinations

Question

Assuming the balls to be identical except for difference of colours the number of ways in which one or more ball can be selected from $10$ white, $9$ green and $7$ black balls is:

Moderate

A

629
B

630
C

879
D

880

Solution

We can select 0 or more balls out of 10 white balls in 11 ways. [select 0 or 1 or 2 or 10 white balls.]
Thus, the number of ways of making a selection of 0 or more balls

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App