Q. In a collection of 6 mathematics books and 4 physics books, the probability that 3 particular mathematics books will be together is:

 4925  229 Probability Report Error

Solution:

Total ways in a collection of books
= (6 + 4)! =10!
Let 3 books of maths consider as one book, then (3 maths + 3 maths + 4 physics) = 6 books
Favourable cases = 3! × 8!
Required probability