In the binomial expansion of `(1+x)^(43)`, the coefficients of the `(2r+1)` th and `(r+2)` th terms are equal. Then r=

In the binomial expansion of (1 + x)^(10) , the coefficeents of (2m + 1)^(th) and (4m + 5)^(th) terms are equal. Value of m is

If in the expansion of (1+x)^(15), the coefficients of (2r+3)^(th) a n d\ (r-1)^(th) terms are equal, then the value of r is a. 5 b. 6 c. 4 d. 3

how that the coefficient of (r+1) th in the expansion of (1+x)^(n+1) is equal to the sum of the coefficients of the r th and (r+1) th term in the expansion of (1+x)^n

if the coefficient of (2r+1) th term and (r+2) th term in the expansion of (1+x)^(43) are equal then r=?

If the coefficients of r,(r +1 ),(r+2) terms in (1+x)^14 are in A.P. then r =

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

If the coefficient of (2r+ 5) th term and (r- 6) th term in the expansion (1+x)^39 are equal, find r

If the rth term in the expansion of (1+x)^20 has its coefficient equal to that of the (r+ 4)th term, find r

If the coefficient of (2r+4)th and (r-2)th terms in the expansion of (1+x)^(18) are equal, find r .

If in the expansion of (1-x)^(2n-1) a_r denotes the coefficient of x^r then prove that a_(r-1) +a_(2n-r)=0