If in the expansion of `(a-2b)^n ,` the sum of 5th and 6th terms is 0, then the values of `a//b=` `(n-4)/5` b. `(2(n-4))/5` c. `5/(n-4)` d. `5/(2(n-4))`

If in the expansion of (a-2b)^(n) , the sum of 5^(th) and 6^(th) terms is 0, then th e values of a//b =

In the binomial expansion (a-b)^n, nge5 the sum of 5th and 6th terms is zero. Then find a/b

If in the expansion of (a+b)^(n) the coefficient of 4^(th) and 13^(th) term are equal.Find the value of n

In the binomial expansion of (a-b)^(n),n>=5 the sum of the 5 th and 6 th term is zero.Then a/b equals (n-5)/6 b.(n-4)/5 c.n/(n-4)d*6/(n-5)

In the binomial expansion of (a-b)^(n),n>=5 the sum of 5 th and 6 th terms is zero,then (a)/(b) equals (1)(5)/(n-4) (2) (6)/(n-5) (3) (n-5)/(6) (4) (n-4)/(5)

In the binomial expansion of (a - b)^(n) , n ge 5 , the sum of the 5^(th) and 6^(th) terms is zero. Then, a//b equals

If the coefficient of 4th term in the expansion of (a+b)^(n) is 56, then n is