Question

Assuming the balls to be identical expect for difference in colour the number of ways in which one or more balls can be selected from 10 white . 9 green and 7 black?

Answer 1

@experimentX @kartiksriramk

Answer 2

how many??

Answer 3

wat

Answer 4

balls to be selected

Answer 5

Number of ways to do this = 11 x 10 x 8

Answer 6

how many balls do you have to select? is it general case?

Answer 7

One or more balls..

Answer 8

Sorry, 11*10*8 - 1.You said one or more right?

Answer 9

hw @siddhantsharan

Answer 10

No of ways to select white ball :
Select none----1
Select 1.-----2
Select 2------3
.
.
.
Select 10 -----11

Total ways = 11 ways.
Similarly for the green and black.
Now, you subtract the one case where no ball will be selected.

Answer 11

Is 879 correct?

Answer 12

yup u r correct