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IMPORTANT
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If all the letters of the word QUEUE are arranged in all possible manner as they are in a dictionary, then the rank of the word QUEUE is

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Important Questions on Permutation and Combination

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JEE Main
IMPORTANT
Mathematics Crash Course JEE Main>Chapter 21 - Permutation and Combination>Level 2>Q 1
116 people participated in a knockout tennis tournament The players are paired up in the first round, the winners of the first round are paired up in the second round, and so on till the final is played between the two players. If after any round, there is odd number of players, one player is given a bye, i.e. he skips that round and plays the next round with the winners. The total number of matches played in the tournament is
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IMPORTANT
Mathematics Crash Course JEE Main>Chapter 21 - Permutation and Combination>Level 2>Q 2
I have tiled my square bathroom wall with congruent square tiles. All the tiles are red, except those along the two diagonals, which are all blue. If I used 121 blue tiles. Then the number of red tiles I used are
HARD
JEE Main
IMPORTANT
Mathematics Crash Course JEE Main>Chapter 21 - Permutation and Combination>Level 2>Q 3
How many six-digit numbers are there in which no digit is being repeated, even digits appear at even places, odd digits appear at odd places and the number is divisible by 4?
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Mathematics Crash Course JEE Main>Chapter 21 - Permutation and Combination>Level 2>Q 4
If N is the number of positive integral solutions of x1 x2 x3 x4=770, then N=?
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JEE Main
IMPORTANT
Mathematics Crash Course JEE Main>Chapter 21 - Permutation and Combination>Level 2>Q 5
How many line segments have both their endpoints located at the vertices of a given cube?
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JEE Main
IMPORTANT
Mathematics Crash Course JEE Main>Chapter 21 - Permutation and Combination>Level 2>Q 6
Three and four digit numbers are formed from the digits 1, 3, 5, 6, 8. If e1 is number of three digit even numbers with no digit repeated and e2 is number of four digit even numbers with no digit repeated. Also O1 represent the number of three digit odd numbers in which no digit is repeated and O2 represent the number of four digit odd numbers in which no digit is repeated. Then
HARD
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IMPORTANT
Mathematics Crash Course JEE Main>Chapter 21 - Permutation and Combination>Level 2>Q 7
The sum of all numbers greater than 1000 formed by using the digits 1, 3, 5, 7 such that no digit is being repeated in any number is -
HARD
JEE Main
IMPORTANT
Mathematics Crash Course JEE Main>Chapter 21 - Permutation and Combination>Level 2>Q 8
Sum of all the numbers that can be formed using all the digits 2, 3, 3, 4, 4, 4 is