Question

There are 10 white and 10 black balls each set numbered 1,2,3......10. The no. of ways in which they can be arranged so that no two adjacent balls are of same colour is ?

Answer 1

the probability of white balls are 1/2 and black balls are 1/2

Answer 2

here is u r answer.
5/10
result give 1/2u r answer

because total outcome 10.ok