Home
Class 11
MATHS
How many four-digit numbers can be forme...

How many four-digit numbers can be formed by using the digits 1, 2, 3, 4, 5, 6, 7 if at least one digit is repeated.

Promotional Banner

Topper's Solved these Questions

  • LOGARITHM

    CENGAGE PUBLICATION|Exercise All Questions|177 Videos

  • PROBABILITY

    CENGAGE PUBLICATION|Exercise All Questions|1 Videos

Similar Questions

Explore conceptually related problems

How many 4-digit numbers can be formed from the digits 1, 1, 2, 2, 3, 3,4, 5?

How many 4 digit numbers can be formed from the digits 1, 1, 2, 2, 3, 3, 4, 5 ?

How many 4 - digit numbers can be formed from the digits 1,1,2,2,3,3,4,5?

How many 4-digit numbers can be formed by using the digits 1 to 9 if no digit is repeated?

How many 3-digit numbers can be formed by using the digits 1 to 9 if no digit is repeated?

How many 5 digit numbers can be formed using the digits 0,2,5,6,7 without repeating the digits?

How many 3-digit even numbers can be made using the digits 1,2,3,4, 6, 7, if no digit is repeated?

The number of four-digit numbers that can be formed by using the digits 1,2,3,4,5,6,7,8 and 9 such that the least digit used is 4 , when repetition of digits is allowed is

How many five -digit numbers divisible by 3 can be formed using the digits 0, 1, 2, 3. 4 and 5 when ho digit is repeated?

Find the number of 4-digit numbers that can be formed using the digits 1, 2, 3, 4, 5 if no digit is repeated. How many of these will be even?

CENGAGE PUBLICATION-PERMUTATIONS AND COMBINATIONS-All Questions
  1. Find .^5P2

    Text Solution

    |

  2. Evaluate the following .^5P3

    Text Solution

    |

  3. Find the number of ways in which 5A^(prime)s and 6B ' s can be arrange...

    Text Solution

    |

  4. How many four-digit numbers can be formed by using the digits 1, 2, 3,...

    Text Solution

    |

  5. There are six periods in each working day of the school. In how many ...

    Text Solution

    |

  6. Find the number of permutation of all the letters of the word MATHE...

    Text Solution

    |

  7. Find 5P3

    Text Solution

    |

  8. In how many ways can 30 marks be allotted to 8 question if each que...

    Text Solution

    |

  9. Find the number of arrangements of the letters of the word SALOON, if ...

    Text Solution

    |

  10. If the best and the worst paper never appear together, find in how man...

    Text Solution

    |

  11. Find the probability that the birth days of six different persons will...

    Text Solution

    |

  12. A committee of 6 is chosen from 10 men and 7 women so as to contain at...

    Text Solution

    |

  13. If .^(n+2)C8:^(n-2)P4:: 57 : 16 , find n

    Text Solution

    |

  14. Find the number of positive integers, which can be formed by using any...

    Text Solution

    |

  15. Write the first four terms of the A.P. when its first term is – 5 and ...

    Text Solution

    |

  16. In how many ways can 5 girls and 5 boys be arranged in a row if all bo...

    Text Solution

    |

  17. Solve: an= (3n^2)/2 + (5n)/2 Find the 25th term.

    Text Solution

    |

  18. If there are 12 persons in a party, and if each two of them shake hand...

    Text Solution

    |

  19. Find the ratio of .^20Cr and .^(25)Cr when each of them has the greate...

    Text Solution

    |

  20. If a ,b ,c in {1,2,3,4,5,6,} find the number of ways a, b, c can be ...

    Text Solution

    |