Home
Class 11
MATHS
If sum(k=0)^(18)(k)/(18C(k))=a sum(k=0)^...

If `sum_(k=0)^(18)(k)/(18C_(k))=a sum_(k=0)^(18)(1)/(18C_(k))`, then the value of a is equal to

A

3

B

9

C

6

D

18

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

If sum_(k=0)^(n)(k^(2)+k+1)(k!)=(2018)(2018!) then the value of n is equal to

If (1+x)^(n)=sum_(r=0)^(n)C_(r)x^(n) and sum_(r=0)^(n)(C_(r))/(r+1)=k then the value of k is

If int_(0)^(k)(dx)/(2+18x^(2))=(pi)/(24) , then the value of k is

Suppose m and n are positive integers and let S=sum_(k=0)^(n)(-1)^(k)(1)/(k+m+1)(nC_(k)) and T=sum_(k=0)^(m)(-1)^(k)1(k+n+1)(mC_(k)) then S-T is equal to

If int_(0) ^(k) (dx)/(2+18 x^(2))=(pi)/(24), then the value of k is

If K=sin((pi)/(18))sin((5 pi)/(18))sin((7 pi)/(18)), then the numerical value of K is

sum_(k=0)^(20)(.^(20)C_(k))^(2) is equal to