Home
Class 11
MATHS
The value of.^50c4+underset(r=1)overset6...

The value of`.^50c_4+underset(r=1)overset6sum.^(56-r)c_3` is

A

`.^56c_3`

B

`.^56c_4`

C

`.^55c_4`

D

`.^55c_3`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PARABOLA, ELLIPSE AND HYPERBOLA

    PATHFINDER|Exercise QUESTION BANK|66 Videos

  • PERMUTATION AND COMBINATIONS

    PATHFINDER|Exercise QUESTION BANK|81 Videos

Similar Questions

Explore conceptually related problems

The value of underset(r=1)overset9sum sin^2(rpi)/18 =

Prove that the value of underset(r=0)overset10sum cos^3((rpi)/3) is equal to -1/8

Find the value of underset(r = 0) overset(oo)sum tan^(-1) ((1)/(1 + r + r^(2)))

Find the value of underset(r = 1)overset(10)sum underset(s = 1)overset(10)sum tan^(-1) ((r)/(s))

If R_(1) is the circumradius of the pedal triangle of a given triangle ABC, and R_(2) is the circumradius of the pedal triangle of the pedal triangle formed, and so on R_(3), R_(4) ..., then the value of underset( i=1)overset(oo)sum R_(i) , where R (circumradius) of DeltaABC is 5 is

The value of underset(nrarrinfty)lim oversetn underset(r=1) sum (r^3)/(r^4+n^4) is

Which of the following integrals can be represented by underset(h to 0)limh underset(r=1)overset(n)sum r^(2)h^(2) where nh = 2 ?

Find the value of overset(10)underset(i=1)sum(10xxi) .

The value of [""^(47)C_(4) +sum _(r=1)^(5) ""^(52-r)C_(3)] is equal to-

Prove that underset(r=1)overset(n)sum "tan"^(-1)(2r)/(r^(4)+r^(2)+2)="tan"^(-1)(n^(2)+n+1)-(pi)/(4)

PATHFINDER-PERMUTATION AND COMBINATION-QUESTION BANK
  1. If all permutation of the letters of the word AGAIN are arranged as in...

    Text Solution

    |

  2. If a,b,c,d are odd natural numbers such that a+b+c+d=20 then the numbe...

    Text Solution

    |

  3. The value of.^50c4+underset(r=1)overset6sum.^(56-r)c3 is

    Text Solution

    |

  4. On the occasion of deepawali festival each student of a class sends gr...

    Text Solution

    |

  5. The set S:={1,2,3…..12} is to be partitioned into three sets A,B,C of ...

    Text Solution

    |

  6. From 6 different novels and 3 different dictionaries 4 novels and 1 di...

    Text Solution

    |

  7. A servant has to post 5 letters and there are 4 letter boxes in how ma...

    Text Solution

    |

  8. In how many ways 5 delegates can be put in 6 hotels of a city if there...

    Text Solution

    |

  9. How many different words can be formed with the letters of the word "M...

    Text Solution

    |

  10. If .^(n-1)c3+^(n-1)c4gt^nc3 then n is greater than

    Text Solution

    |

  11. The number of ways in which three distinct numbered in an increasing A...

    Text Solution

    |

  12. The number of permutations of the letters of the word ENDEANOEL taken ...

    Text Solution

    |

  13. There are 4 letters and 4 directed envelopes the number of ways in whi...

    Text Solution

    |

  14. Let E={1,2,3,4},F={1,2} then the number of onto functions from E to F ...

    Text Solution

    |

  15. The number of 5 digits numbers that contain 7 exactly once is

    Text Solution

    |

  16. Number of 4 digit numbers which are divisible by 4 that can be formed ...

    Text Solution

    |

  17. The number of ways of painting the faces of a cube with six different ...

    Text Solution

    |

  18. Find the number of words which can be made from letters of the word IN...

    Text Solution

    |

  19. Sanjay has 10 friends among whom two are married to each other she wis...

    Text Solution

    |

  20. There are n seats round a table marked 1,2,3,…..n the number of ways i...

    Text Solution

    |