Home
Class 12
MATHS
If the coefficients of r^(th) and (r+1)^...

If the coefficients of `r^(th)` and `(r+1)^(th)`terms in expansion of `(3+7x)^(29)` are equal , then r equals

A

15

B

21

C

14

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • BINOMIAL THEOREM

    VMC MODULES ENGLISH|Exercise LEVEL 2|50 Videos

  • BINOMIAL THEOREM

    VMC MODULES ENGLISH|Exercise NUMERICAL VALUE TYPE FOR JEE MAIN|14 Videos

  • BINOMIAL THEOREM

    VMC MODULES ENGLISH|Exercise JEE Archive|56 Videos

  • CIRCLES

    VMC MODULES ENGLISH|Exercise JEE ADVANCED ( ARCHIVE )|68 Videos

Similar Questions

Explore conceptually related problems

If the coefficients of rth and (r+1)t h terms in the expansion of (3+7x)^(29) are equal, then r is equals to a. 15 b. 21 c. 14 d. none of these

If the coefficients of rth and (r+1)t h terms in the expansion of (3+7x)^(29) are equal, then r equals a. 15 b. 21 c. 14 d. none of these

If the coefficient of (3r)^(th) and (r + 2)^(th) terms in the expansion of (1 + x)^(2n) are equal then n =

If the coefficients of (r-5)^(t h) and (2r-1)^(t h) terms in the expansion of (1+x)^(34) are equal, find r .

If the coefficients of (r-5)^(th) and (2r-1)^(t h) terms of the expansion (1+x)^(34) are equal, find r.

If the coefficients of (r-5)^(t h) and (2r-1)^(t h) terms in the expansion of (1+x)^(34) are equal, find rdot

If the coefficient of rth term and (r+1)^(th) term in the expansion of (1+x)^(20) are in ratio 1:2 , then r is equal to

If the coefficient of (2r+4)th and (r-2)th terms in the expansion of (1+x)^(18) are equal, find r .

If the coefficient of (2r+1) th and (r+2) th terms in the expansion of (1+x)^(43) are equal, then the value of r(r!=1) is

If the coefficient of (2r + 4)^(th) term and (r - 2)^(th) term in the expansion of (1 + x)^18 are equal then find r.

VMC MODULES ENGLISH-BINOMIAL THEOREM-LEVEL 1
  1. if the rth term in the expansion of (x/3-2/(x^2))^(10) contains x^4 t...

    Text Solution

    |

  2. If the fourth term in the expansion of (px+1/x)^n is independent of x,...

    Text Solution

    |

  3. If the coefficients of r^(th) and (r+1)^(th)terms in expansion of (3+7...

    Text Solution

    |

  4. Find the coefficient of x^(7) in the expansion of (ax^(2) + (1)/(bx...

    Text Solution

    |

  5. If 3 * ^(n1-n2)P2=^(n1+n2)P2=90 then the ordered pair (n1 ,n2) is

    Text Solution

    |

  6. In the expansion of (2-3x^3)^(20), if the ratio of 10^(th) term to 11^...

    Text Solution

    |

  7. The (p+2)^(th) term from the end in (x-1/x)^(2n+1) is :

    Text Solution

    |

  8. about to only mathematics

    Text Solution

    |

  9. The coefficient of the middle term in the binomial expansion in powers...

    Text Solution

    |

  10. The value of 4{ C1 +4. C2 +4^2 C3 + ... +4^(n-1)} is

    Text Solution

    |

  11. The coefficient of the term independent of x in the exampansion of ((x...

    Text Solution

    |

  12. Find the coefficient of x^5 in the expansion of (1+x^2)^5(1+x)^4.

    Text Solution

    |

  13. For natural numbers m, n if (1-y)^(m)(1+y)^(n) = 1+a(1)y+a(2)y^(2) + "...

    Text Solution

    |

  14. The term independent of x in (1+x)^m (1+1/x)^n is

    Text Solution

    |

  15. Find the number of nonzero terms in the expansion of (1+3sqrt(2)x)^9+(...

    Text Solution

    |

  16. Find the coefficient of x^(20) in (x^2+2+1/(x^2))^(-5)(1+x^2)^(40)dot

    Text Solution

    |

  17. If x^m occurs in the expansion (x+1//x^2)^(2n) , then the coefficient ...

    Text Solution

    |

  18. Find the coefficient of x^5 in the expansion of (1+x)^(21)+(1+x)^(22)+...

    Text Solution

    |

  19. If n > 1 is an integer and x!=0, then (1 +x)^n-nx-1 is divisible by

    Text Solution

    |

  20. The coefficient of x^5 in the expansion of (x^2-x-2)^5 is -83 b. -82 c...

    Text Solution

    |