Question

As there are 21 red balls and 19 blue balls. So there can be 22 different positions for blue balls ( because we can't arrange two blue balls together).​

Answer 1

Answer:

5 87 37474th 67854356789886654556788876

Answer 2

Answer:

1540

Step-by-step explanation:

As there are 21 red balls and 19 blue balls.

So there can be 22 different positions for blue balls (because we can't arrange two blue balls together).

Appliny concept,

Total ways =22C19

=22/19(22-19)

=22/19*3

=22*21*20*19/19*3

=22*7*10

=1540