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

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

A

`7P_(2).2^5`

B

`7C_(2).2^5`

C

`7C_(2).5^2`

D

`7C_(2).2^7`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PARABOLA

    HIMALAYA PUBLICATION|Exercise QUESTION BANK|233 Videos

  • PROBABILITY

    HIMALAYA PUBLICATION|Exercise QUESTION BANK|213 Videos

Similar Questions

Explore conceptually related problems

The number of different four digit numbers that can be formed with the digits 2,3,4,7 and using each digit only once is :

The number of different four - digit numbers that can be formed with the digits 2,3,4,5,7 , using each digit only once, is :

Find the number of 4 digit numbers that can be formed using the digits 1,2,3,4,5.If no digits is repeated.

How many different seven digit numbers are there, the sum of whose digits is even ?

The number of four-digit numbers that can be made with the digits 1, 2, 3, 4, and 5 in which at least two digits are identical is

Find the sum of all five digit numbers ,that can be formed using the digits 1, 2, 3, 4 and 5 (repetition of digits not allowed)

The General form of a three digit number 256

How many 3 digit odd numbers can be formed by using the digits 1, 2, 3, 4, 5, 6 when the repetition of the digits is not allowed ?

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

The number of four digit even numbers that can be formed using 0,1,2,3,4,5,6 without repetition

HIMALAYA PUBLICATION-PERMUTATION AND COMBINATIONS-Question Bank
  1. How many different words each containing 3 vowels and 5 consonants ca...

    Text Solution

    |

  2. The number of permutations of 'n' different objects taken r at a time...

    Text Solution

    |

  3. The number of different seven digit numbers that can be written usin...

    Text Solution

    |

  4. A polygon has 170 diagnols. How many sides will it have?

    Text Solution

    |

  5. The number of 2 xx 2 matrices having elements 0 and 1 is

    Text Solution

    |

  6. There are 'n' seats round a table numbered 1,2, 3,….,n. The number of...

    Text Solution

    |

  7. All the letters of the word ' EAMCET '' are arranged in all possible w...

    Text Solution

    |

  8. The straight lines , l1,l2 and l3 are parallel and lie in the same pla...

    Text Solution

    |

  9. The sum of the digits in unit place of all the numbers formed with the...

    Text Solution

    |

  10. The number of ways in which 5 boys and 3 girls can he seated in a row ...

    Text Solution

    |

  11. The maximum number of points into which 4 circles and 4 st . Lines int...

    Text Solution

    |

  12. The maximum number of points of intersection of 7 circles is

    Text Solution

    |

  13. The number of four digit even numbers that can be formed using 0,1,2,3...

    Text Solution

    |

  14. How many four digit numbers can be formed using digits 1,2,3,4,5 such ...

    Text Solution

    |

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

    Text Solution

    |

  16. In a class of 10 students there are 3 girls. The number of ways they c...

    Text Solution

    |

  17. There are 3 copies each of 4 different books. The number of ways they ...

    Text Solution

    |

  18. The number of numbers that can be formed by using all the digits from ...

    Text Solution

    |

  19. A round table conference is to be held among 20 delegates of 20 countr...

    Text Solution

    |

  20. The number of ways in which ten candidates A(1), A(2), .. .., A(10) ca...

    Text Solution

    |