Question
How many digits are required to number a book containing 300 pages?
More Permutation and combination Questions
- In how many different ways can the letters of the word 'COMPUTER' be arranged in such a way that the vowels always come together?
- In how many ways can the letters of the word ‘MEDICAL’ be rearranged so that the vowels never come together?
- How many 5-digit numbers can be formed from 1,2,3,4,5,6 if the number is divisible by 4 and digits do not repeat?
- Find total number of ways in which the word “COMMISSION” can be arranged.
- Out of 6 men and 3 women a committee of 3 members is to be formed so that it has 2 men and 1 woman. In how many different ways can this be done?
- In how many different ways can the letters of word ‘PUMPKIN’ be arranged?
- Seven people are to be arranged on seven chairs. Among them, there are three friends who should not sit together. Find the number of valid arrangements.
- How many numbers lie between 2000 and 3000 divisible by 5 can be made with the digits 2, 3, 4, 5, 6, 7 and 8 without repeating any digit?
- A group consists of 8 boys and 10 girls. In how many ways 5 boys and 4 girls can be chosen from the group?
- 30 junior and 38 senior participants participate in a tournament. Each pair of juniors plays one match, and each pair of seniors plays one match. Number of...
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