If `^18C_r=^18C_(r+2)` find `rC_5`

If .^18C_r=^18C_(r+2) , find .^rC_6

(i) If .^(20)C_(r)=.^(20)C_(r+6) , find r. (ii) If .^(18)C_(r)=.^(18)C_(r+2) , find .^(r)C_(5) .

If ^(^^)18C_(r)=^(18)C_(r+2) then prove that ^^^rC_(5)=56.

If ^(18)C_(x)=^(18)C_(x+2),f in dx

If C(18,r)=C(18,r+2), find C(r,5)

If .^(18)C_(r) = .^(18)C_(r+1) , then evaluate .^(r)C_(5) .

If ""^(50)C_(r) = ""^(50)C_(r+2) ,find r.

if 20C_(r-1)=20C_(r+1) then rC_(5)

(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) .