Permutations an...

The number of ways in which a mixed double game can be arranged from amongst 5 married couples if no husband and wife play in the same game is

The total number of 5-digit numbers of different digits in which the digit in the middle is the largest is

The total number of ways in which a begger can be given at least one rupee from four 25-paise coins, three 50 paise coins and 2 one-rupee coins, is

In an examination, the maximum marks for each of three papers are 50 each. Maximum marks for the fourth paper are 100. The number of ways in which the candidate can score 60% marks in the aggregate is

India and Sri Lanka play one day international series until one team wins 4 matches. No match ends in a draw. The number of ways in which India can win the series is

Passengers are to travel by a double decked bus which can accommodate 13 in the upper deck and 7 in the lower deck. The number of ways that they can be distributed if 5 refuse to sit in the upper deck and 8 refuse to sit in the lower deck is

A team from class XII is to be chosen for Maths Quiz. The team can consist of 1 boy and 1 girl. The team is to be chosen from one of the n sections Ai (consisting) of mi boys and ni girls), i = 1, 2, 3,...4. The number of ways of choosing the team is