Home
Class 12
MATHS
If the coefficients of (2r +1) ""^(th...

If the coefficients of (2r +1) `""^(th)`term and `(r+1 )^(th)` term in the expansion of `(1 + x) ^(42)` are equal then r can be

A

12

B

14

C

16

D

20

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • SAMPLE PAPER 2017

    SIA PUBLICATION|Exercise PHYSICS|32 Videos
  • SAMPLE PAPER 2017

    SIA PUBLICATION|Exercise CHEMISTRY|3 Videos
  • QUESTION PAPER

    SIA PUBLICATION|Exercise CHEMISTRY|8 Videos
  • STRAIGHT LINE

    SIA PUBLICATION|Exercise EXERCISE (PROBLEMS)|45 Videos

Similar Questions

Explore conceptually related problems

If the coefficients of (2r+4)^("th") term and (3r+4)^("th") term in the expansion of (1+x)^(21) are equal, find r.

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 (2r+1)th term and (4r+5)th term in the expansion of (1+x)^10 are equal then r=

The (n+1)th term in the expansion of e^(-2) is

The (n+1)th term in the expansion of e^(-3x) is