Permutation prob -MATHS help
By hennars
@hennars (250)
United Arab Emirates
February 18, 2007 11:46pm CST
Anyone, again Expert, pls guide in simple way.
1)5 students were waiting in line outside the bookstore.How many permutations are there for them to satnd in the line as first, second, third & fourth?
2) List all different permutations of the digits{3,4.5}.How many are there?
Again many thanks in advance
1 response
@Methodless (882)
• Canada
19 Feb 07
1) 5 possible students can stand in the front. Once that has been assigned, only four can be second, etc.
5*4*3*2 = 120 permutations
2) There are 6
345
354
435
453
534
543
