The value of underset(r=0)overset(40)sum...

The value of `underset(r=0)overset(40)sumr.^(40)C_(r).^(30)C_(r)` is

A

`40^(69)C_(29)`

B

`40^(70)C_(30)`

C

`""^(69)C_(29)`

D

`""^(70)C_(30)`

Verified by Experts

The correct Answer is:

A

The value of underset(r=0)overset(40)sumr.^(40)C(r).^(30)C(r) is
Text Solution
|
The value of sum(r=0)^(40) r""^(40)C(r)""^(30)C(r) is
Text Solution
|
overset(10)underset(r=0)sum^(40-r)C(5) is equal to
Text Solution
|
underset(r=0)overset(10)sum (40-r)C(5)=
Text Solution
|
The value of ""^(40) C(31) + sum (r = 0)^(10) ""^(40 + r) C(10 +r) is...
Text Solution
|
कथन-1 : यदि rge40 तब .^(40)C(0)*.^(60)C(r)+.^(40)C(1).^(60)C(r-1)....^...
Text Solution
|
Find underset(r=0) overset(10)sumr^ (10)C(r).3^(r).(-2)^(10-r)
Text Solution
|
The value of sum(r=0)^(40) r""^(40)C(r)""^(30)C(r) is (a) 40.^(69)C(29...
Text Solution
|
यदि C(r )=((10),(r)) है, तब underset(r=1)overset(10)Sigma C(r -1)C(r )...
Text Solution
|