" 2.If "^(12)C_(r)=495" ,find the possible values of "^(1)r" ."D

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

If C(12,r)= 495 then find the possible values of r

In .^(6)C_(n) what are the possible values of r?

Find the values of: sin495^@

If .^(n)C_(r-1): .^(n)C_(r): .^(n)C_(r+1)=3:4:5 , find the values of n and r.

If .^(n)C_(r-1): .^(n)C_(r): .^(n)C_(r+1)=3:4:5 , find the values of n and r.

(i) If .^(n)C_(18)=.^(n)C_(12) then find the value of .^(32)C_(n) . (ii) If .^(10)C_(r)=.^(10)C_(r+4) then find the value of .^(5)C_(r) .

If ^(15)C_(3r):^(15)C_(r+1)=11:3, find the value of r