EASY
JEE Advanced
IMPORTANT
Earn 100
The total number of permutations of different things, in a row, taken not more than at a time (each thing may be repeated any number of times) is equal to
50% studentsanswered this correctly
Important Questions on Permutation and Combination
HARD
JEE Advanced
IMPORTANT
A person predicts the outcome of cricket matches of his home team. Each match can result either in a win, loss or tie for the home team. The total number of ways in which he can make the predictions, so that exactly predictions are correct, is equal to
MEDIUM
JEE Advanced
IMPORTANT
A team of four students is to be selected from a total of students. The total number of ways in which a team can be selected such that two particular students refuse to be together and the other two particular students wish to be together only, is equal to
HARD
JEE Advanced
IMPORTANT
The total number of numbers that are less than and can be formed using the digits is equal to
HARD
JEE Advanced
IMPORTANT
Four couples (husband and wife) decide to form a committee of four members. The number of different committees that can be formed in which no couple finds a place, is
HARD
JEE Advanced
IMPORTANT
In an examination of papers, a candidate has to pass in more papers than the number of papers in which he fails in order to be successful. The number of ways in which he can be unsuccessful, is
HARD
JEE Advanced
IMPORTANT
The number of -digit numbers that can be made using the digits and and in which at least one digit is different, is
HARD
JEE Advanced
IMPORTANT
In a club election, the number of contestants is one more than the number of maximum candidates for which a voter can vote. If the total number of ways in which a voter can vote be , then the number of candidates is
HARD
JEE Advanced
IMPORTANT
Two players and play a series of games. Each game can result in either a win or loss for . Total number of ways in which can win the series of these games, is equal to
