Home
Class 11
MATHS
If (2n)C3:nC3=11:1find n....

If `(2n)C_3:`nC_3=11:1`find n.

Promotional Banner

Topper's Solved these Questions

  • Techno India Group Academia South Kolkata, Question Paper

    UNITED BOOK HOUSE|Exercise Exercise |41 Videos

  • THE SCOTTISH CHURCH COLLEGIATE SCHOOL

    UNITED BOOK HOUSE|Exercise EXERCISE|53 Videos

Similar Questions

Explore conceptually related problems

If ^(2n)C_3: ^nC_3=11:1 find the value of n.

Determine n if ""^(2n)C_(3):""^(n)C_(3)=12:1 .

Determine n if ""^(2n)C_(3):""^(n)C_(3)=11:1

If .^(n+1)C_n=11 , then find n.

If .^nC_12=^nC_11 , then find n.

If .^nC_6=^nC_13 , then find n.

If .^nC_8=^nC_7 , then find n.

If .^(2n+1)P_(n-1): .^(2n-1)P_(n)=3:5 , find n.

If ^nC_4=21xx ^(n//2)C_3 find n.

If .^nC_(n-1)=15 , then find n.

UNITED BOOK HOUSE-TECHNO INDIA GROUP ACADEMIA,SOUTH KOLKATA.-EXERCISE
  1. Prove that ,(sin2x)/(1+cos2x)=tanx

    Text Solution

    |

  2. Express in the form A+iB,(A,B are real),i/(1+i)+(1+i)/i

    Text Solution

    |

  3. If (2n)C3:nC3=11:1find n.

    Text Solution

    |

  4. The n term of an A.P is 7n-5,find the sum of first 20 terms of the se...

    Text Solution

    |

  5. Find the 4the term from the end in the expansion of (x^3/2-2/x^2)^9

    Text Solution

    |

  6. Find the equation of the perpendicular bisect or of the line joining t...

    Text Solution

    |

  7. Find the ratio in which the line segment joining A(2,4,5) and B(3,5,4)...

    Text Solution

    |

  8. Evaluate :lim(hrarr0)(e^h h)/h-1

    Text Solution

    |

  9. If f(x)=x|x|,prove that f'(x)=2|x|.

    Text Solution

    |

  10. In a lottery there are 10 prizes and 25 blanks.Find the probability of...

    Text Solution

    |

  11. Find mean and variance for the following data 5,9,8,12,6,10,6,8.

    Text Solution

    |

  12. For any three sets A, B, C. show thatAxx(B-C)=(AxxB)-(AxxC)

    Text Solution

    |

  13. In any /\ABC,prove that sin(B-C)/(sin(B+C))=(b^2-c^2)/(a^2)

    Text Solution

    |

  14. Prove that,cosx/(1-sinx)=tan(pi/4+x/2)

    Text Solution

    |

  15. Prove by mathematical induction that1/1.3+1/3.5+1/5.7+...+1/((2n-1)(2n...

    Text Solution

    |

  16. If x+iy=2/(3+costheta+isintheta),show that 2x^2+2y^2=3x-1

    Text Solution

    |

  17. find the co-efficient of (2r+4)th and (r-2)th terms in the expansion o...

    Text Solution

    |

  18. If p, q, r are in G.P and the equation px^2+2qx+r=0 and dx^2+2ex+f=0 h...

    Text Solution

    |

  19. Show that the points (a,0),(0,b)and (3a,-2b)are collinear.Also find th...

    Text Solution

    |

  20. Find the distance between the parallel lines 4x-3y+5=0 and 4x-3y+7=0.

    Text Solution

    |