Home
Class 12
MATHS
Find the number of 7 - digit numbers tha...

Find the number of 7 - digit numbers that can be formed using 2,2,2,3,3,4,4.

Text Solution

Verified by Experts

The correct Answer is:
`=(7!)/(3! 2! 2!)`
Promotional Banner

Topper's Solved these Questions

  • PERMUTATIONS AND COMBINATIONS

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise LONG ANSWER QUESTIONS|12 Videos

  • PARTIAL FRACTIONS

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise EXERCISE- 7|32 Videos

  • PROBABILITY

    VIKRAM PUBLICATION ( ANDHRA PUBLICATION)|Exercise DAM SURE|13 Videos

Similar Questions

Explore conceptually related problems

Find the number of 4 - digit numbers that can be formed using the digits 1,2,5,6, 7. How many of them are divisible by i) 2 ii) 3 iii)4 iv) 5 v) 25.

Find the number of 4- digit numbers that can be formed using the digits 1,2,3,4,5,6 that are divisible by (i) 2 (ii) 3 when repetition is allowed.

Find the number of 4 - digited numbers that can be formed using the digits 2, 4, 5, 7 and 8.

Find the number of 5 digited numbers that can be formed using the digits 2,2,3,3,4. How many of them are greater than 30000.

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?

Find the sum of all 4 - digited numbers that can be formed using 1,3,4,5,7 without repetition.

Find the number of 5 - digit numbers that can be formed using the digits 0,1,1,2,3.

Find the number of 4 - digit telephone numbers that can be formed using the digits 1,2,3,4,5,6 with atleast one digit repeated.

Find the number of 4- digited numbers that can be formed using the digits 1,2,4,5,7,8 when repetition is allowed.

Find the number of 4-digit numbers that can be formed using the digits 0, 1,2, 3, 4, 5 which are divisible by 6 when repetition of the digits is allowed

VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-PERMUTATIONS AND COMBINATIONS-TAXTUAL EXERCISES
  1. A chain of beads is to be prepared using 6 different red coloured bead...

    Text Solution

    |

  2. A family consists of father, mother, 2 daughters and 2 sons. In how ma...

    Text Solution

    |

  3. Find the number of 7 - digit numbers that can be formed using 2,2,2,3,...

    Text Solution

    |

  4. Find the number of 4 - letter words that can be formed using the lette...

    Text Solution

    |

  5. How many numbers can be formed using all the digits 1,2,3,4,3,2,1 such...

    Text Solution

    |

  6. In a library, there are 6 copies of one book, 4 copies each of two dif...

    Text Solution

    |

  7. A book store has 'm' copies each of, 'n' different books. Find the num...

    Text Solution

    |

  8. Find the number of 5 - digit numbers that can be formed using the digi...

    Text Solution

    |

  9. In how many ways can the letters of the word CHEESE be arranged so tha...

    Text Solution

    |

  10. Find the number of ways of arranging the letters of the word ASSOCIATI...

    Text Solution

    |

  11. Find the number of ways of arranging the letters of the word MISSING s...

    Text Solution

    |

  12. If the letters of the word AJANTA are permuted in all possible ways an...

    Text Solution

    |

  13. If ""^(n)P(4)=210, find n.

    Text Solution

    |

  14. If ""^(12)C(r)=495, find the possible values of (r ).

    Text Solution

    |

  15. If ""^(n)P(r)=5040 and ""^(n)C(r)=210, find n and r.

    Text Solution

    |

  16. If ""^(n)C(4)=""^(n)C(6), find n.

    Text Solution

    |

  17. If ""^(17)C(2t+1)=""^(17)C(3t-5), find t.

    Text Solution

    |

  18. If ""^(9)C(3)+""^(9)C(5)=""^(10)C(r) then find r.

    Text Solution

    |

  19. Find the number of ways of forming a committee of 5 members from 6 men...

    Text Solution

    |

  20. Find the number of ways of forming a committee of 5 members from 6 men...

    Text Solution

    |