[" Q.18) "C(18,r)=C(18,r+2)" then the "],[" value of "C(r,5)]

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

C (18, r) = C (18, r + 2). Then 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 ""^(18) C_r= ""^(18)C_(r+2) , Find the value of ""^ ( r ) C_5

If .^(18)C_(r) = .^(18)C_(r+2) , then evaluate .^(r)C_(5) .

""^(20)C_(r) =""^(20)C_(r-10), then find the value of ""^(18)C_(r)

If ((18)C(r-2))+2((18)C(r-1))+((18)C(r))ge((20)C(13)) , then the number of values of r are

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

If (18)/(r+10)=(3)/(r) , what is the value of (r)/(3) ?

If sum_(k = 0)^(18)(k)/(""^(18)C_(k))= a sum_(k=0)^(18)(1)/(""^(18)C_(k)) , then the value of a is a)3 b)9 c)6 d)18