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Aptitude Day 114

Problems on Permutations and Combinations:

1. In how many ways can a team 5 be chosen from 7 players?

Solution:
               The Required number of ways = 7C5
                                                                = 7C7-5 = 7C2

                                                                =  7*6/1*2
                                                                = 21.

2. In how many ways, a group of 6 members can be selected from 8 men and 6 ladies, consisting of 4 men and 2 ladies?

Solution:
               The Required number of ways = 8C4 * 6C2

                                                                 = (8*7*6*5/ 1*2*3*4) * (6*5/1*2)
                                                                 = 1050.


       


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