Home
Class 12
MATHS
The number of different seven digit ...

The number of different seven digit number that can be written using only the three digits 1,2, and 3 with the condition that the digit 2 occurs twice in each number is

A

`""^(7)P_(2).2^(5)`

B

`""^(7)C_(2).2^(5)`

C

`""^(7)C_(2).5^(2)`

D

`""^(7)C_(2).10`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PERMUTATIONS & COMBINATIONS

    AAKASH SERIES|Exercise EXERCISE-II|229 Videos

  • PARTIAL FRACTIONS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|31 Videos

  • PROBABILITY

    AAKASH SERIES|Exercise Practise Exercise|165 Videos

Similar Questions

Explore conceptually related problems

Find the number of four digited number that can be formed using the digits 1,2, and 3.

Find the number of 4 digited numbers that can be formed using the digits 0,1,2.

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

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

The total number of seven digit numbers so that the sum of digits is even is

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

Total number of four digit odd numbers that can be formed using 0, 1, 2, 3, 5, 7 are

AAKASH SERIES-PERMUTATIONS & COMBINATIONS-PRACTICE EXERCISE
  1. The number of ways of dividing 100 scouts into 3 squads of 50, 30, 20 ...

    Text Solution

    |

  2. The number of ways of dividing 15 cards into 3 groups of 5 cards each ...

    Text Solution

    |

  3. If the number of subsets with 8 elements from the set A={a(1),a(2),a(3...

    Text Solution

    |

  4. At an election three wards of a town of a are canvassed by ...

    Text Solution

    |

  5. Number of ways to give 16 different things to A, B, C so that B gets 1...

    Text Solution

    |

  6. The number of ways in which and examiner can assign 20 maks to...

    Text Solution

    |

  7. The number of ways in which 13 gold coins can be distributed ...

    Text Solution

    |

  8. IF there are 6 periods in each working day of a school , then ...

    Text Solution

    |

  9. The number of 5 digited numbers using all the digits 2, 4, 6, 8 is

    Text Solution

    |

  10. The number of 4 letter words can be formed from the letters of the wor...

    Text Solution

    |

  11. There are 12 boys to be seated on 2 benches , 6 on each lenc...

    Text Solution

    |

  12. Out of 7 consonants and 5 vowels how many different words can...

    Text Solution

    |

  13. From a company of 20 soldiers any 5 are placed on guard, each batch to...

    Text Solution

    |

  14. There are 7 Telugu books and 4 Hindi books. From those in how many way...

    Text Solution

    |

  15. A gentlemen invites a party of 10 guests to a dinner and places...

    Text Solution

    |

  16. The number of different seven digit number that can be written...

    Text Solution

    |

  17. Set A has 12 elements. The number of ways of selecting two subsets P a...

    Text Solution

    |

  18. If a is the number of ways of selecting 3 vowels, 2 consonents, b is t...

    Text Solution

    |

  19. Assertion (A): The number of ways in which 4 sovereings can be given a...

    Text Solution

    |

  20. Assertion (A) : A question paper contains 5 questions each having an a...

    Text Solution

    |