Four persons enter a railway carriage in which there are six seats, in how many ways can they take their place?
1 Answer
Jan 31, 2018
Explanation:
The 1st person can sit in =
the 2nd person can sit in =
The 3rd person can sit in =
The 4th person can sit in
So they can sit in =
or, the other way is:
4 seats can be chosen from 6 seats in
and 4 people can be arranged in
Therefore, total ways of seating =
=