Home
Class 12
MATHS
If ""^(2)C(r)=495, find the possible val...

If `""^(2)C_(r)=495`, find the possible values of (r ).

Text Solution

Verified by Experts

The correct Answer is:
4,8
Promotional Banner

Similar Questions

Explore conceptually related problems

If ""^(12)C_(r)=495 , find the possible values of (r ).

If n is a positive integer and C_(r )= ""^(n)C_(r ) then find the vlaue of sum_(r =1)^(n) r^(2)((C_(r ))/(C_(r -1))) .

If ""^(22)C_(r) is the largest binomial coefficient in the expansion of (1+x)^(22) , find the value of ""^(13)C_(r) .

If ""^(12)C_(r+1)=""^(12)C_(3r-5), find r.

If n is a positive integer and C_4 = ""^nC_r then find the value of sum_(x = 1)^n r^2 ((C_r)/(C_(r - 1)) )

Current density in a cylindrical wire of radius R is given as J={(J_(0)((x)/(R )-1)" for "0lex lt (R )/(2)),(J_(0)(x)/(R )" for "(R )/(2)le x le R):} . If the current flowing in the wire is (k)/(12)piJ_(0)R^(2) , find the value of k.