Home
Class 12
MATHS
The value of 2^(n)n!(1.3.5.....(2n-1)) i...

The value of `2^(n)n!(1.3.5.....(2n-1))` is

A

`(2n)!`

B

`(4n)!`

C

`((2n)!)/(n)`

D

`n!`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • PERMUTATIONS & COMBINATIONS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|163 Videos
  • PERMUTATIONS & COMBINATIONS

    AAKASH SERIES|Exercise EXERCISE-I|60 Videos
  • PARTIAL FRACTIONS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|31 Videos
  • PROBABILITY

    AAKASH SERIES|Exercise Practise Exercise|165 Videos

Similar Questions

Explore conceptually related problems

If the middle term of (1+x)^ (2n) is (1.3.5….(2n-1)k)/(n!) then k=

Show that the middle term in the expansion of (1+x)^(2n)" is "(1.3.5. ..(2n-1))/(n!)(2x)^(n).

The value of Lim_(x to oo)(1.2+2.3+3.4+....+n.(n+1))/(n^(3))= is

"Prove that "(""^(4n)C_(2n))/(""^(2n)C_(n))=(1.3,5......(4n-1))/({1.3.5....(2n-1)}^(2))

the value of (1)/((81)^n)-^(2n) C_1. ((10)^2)/((81)^n)+ ^(2n) C_1 ((10)^2)/((81)^n)…....+((10)^2n)/((81)^n) is

AAKASH SERIES-PERMUTATIONS & COMBINATIONS-EXERCISE-II
  1. If ""^(n)C(4),""^(n)C(5),""^(n)C(6) are in A.P., then the value of n i...

    Text Solution

    |

  2. If ""^(n)C(r-1)=36,""^(n)C(r)=84 and ""^(n)C(r+1)=126, then r is equal...

    Text Solution

    |

  3. The value of 2^(n)n!(1.3.5.....(2n-1)) is

    Text Solution

    |

  4. If a(n)=sum(r=0)^(n)(1)/(""^(n)C(r)) then sum(r=0)^(n)(r)/(""^(n)C(r))...

    Text Solution

    |

  5. ""^(n)C(r)+4.""^(n)C(r-1)+6.""^(n)C(r-2)+4.""^(n)C(r-3)+""^(n)C(r-4) i...

    Text Solution

    |

  6. The sum sum(i=0)^(m)((10)/(i))((20)/(m-i)) is maximum when m is

    Text Solution

    |

  7. In a football championship there were played 153 matches. Every two te...

    Text Solution

    |

  8. From a group of persons the number of ways of selecting 5 persons is e...

    Text Solution

    |

  9. In a chess tournament where the participants were to play one game wit...

    Text Solution

    |

  10. A teacher takes 3 children from her class to the zoo at a time as ofte...

    Text Solution

    |

  11. From 0 to 9, four digited numbers can be formed such that the digits a...

    Text Solution

    |

  12. The total number of 4 digit numbers in which the digits are in descend...

    Text Solution

    |

  13. There are 12 balls numbered from 1 to 12. The number of ways in which ...

    Text Solution

    |

  14. The number of ways in which we can select four numbers from 1 to 30 so...

    Text Solution

    |

  15. The number of ways in which 4 vowels and 2 consonants be chosen from E...

    Text Solution

    |

  16. The number of ways in which 5 players be chosen from 12 players so as ...

    Text Solution

    |

  17. The number of ways in which a team of eleven players can be selected f...

    Text Solution

    |

  18. Acommittee of 12 members is to formed from 9 women and 8 men ...

    Text Solution

    |

  19. A cricket 11 is to be selected out of 14 players of whom 5 are ...

    Text Solution

    |

  20. The number of ways an international committee of 4 be formed out of 6 ...

    Text Solution

    |