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

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

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

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

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

If ^nC_(n-4)=15 , find ^rC_6

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

If .^(16)C_(r) = .^(16)C_(r+6) , then find .^(5)C_(r) .