Q13 of 118 Page 17

Mark the correct alternative in the following:
Three persons enter a railway compartment. If there are 5 seats vacant, in how many ways can they take these seats?

Three persons can take 5 seats in ⁵C₃ ways.

Also, 3 persons can sit in 3! ways.

Required number of ways =

⁵C₃ 3!

= 10 6

= 60

Mark the correct alternative in the following:

Total number of words formed by 2 vowels and 3 consonants taken from 4 vowels and 5 consonants is equal to

Mark the correct alternative in the following:

There are 12 points in a plane. The number of the straight lines joining any two of them when 3 of them are collinear, is

Mark the correct alternative in the following:

In how many was can a committee of 5 be made out of 6 men and 4 women containing at least one women?

Mark the correct alternative in the following:

There are 10 points in a plane and 4 of them are collinear. The number of straight lines joining any two of them is

Mark the correct alternative in the following:Three persons enter a railway compartment. If there are 5 seats vacant, in how many ways can they take these seats?