a Find how many ways can we arrange the following people Jil

(a) Find how many ways can we arrange the following people?

Jill

Jane

Sue

Mary

(b) Find how many ways can we arrange the following people? Jill Sue Jane Mary

Solution

a) number of ways of arranging = 4 x 3 x 2 x 1 = 24

Here 1st place can be occupied by any of them. then 3 r left. Placing one of them, 2 are left and then similarly 1.

or we can say 4! ways = 24

b)number of ways of arranging = 4 x 3 x 2 x 1 = 24

Here 1st place can be occupied by any of them. then 3 r left. Placing one of them, 2 are left and then similarly 1.

or we can say 4! ways = 24