Question
How many 4-digit numbers can be formed using digits 1–9 if repetition is not allowed and the number is even?
More Permutation and combination Questions
- Geography books are never together.
- In how many ways can the letters of the word ‘MEDICAL’ be rearranged so that the vowels never come together?
- In how many ways can the letters of the word TERRORISTS be arranged by taking 4 letters at a time?
- In how many different ways can the letters of the word QUANTITY be arranged so that the vowels always come together?
- In how many different ways can the letters of the word ‘PADDLED’ be arranged?
- A person has 12 friends out of which 7 are relatives. In how many ways can he invite 6 friends such that at least 4 of them are relatives?
- Find the number of ways to arrange each letter of the word 'COMMITTEE' such that all the vowels always come together.
- In how many different ways can the letters of word ‘PUMPKIN’ be arranged?
- How many 5-digit even numbers can be formed using the digits 0 to 9 if no digit is repeated?
- A group consists of 9 boys and 8 girls. In how many ways can 3 boys and 5 girls be selected from the group?
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