If the coefficients of the rth, `(r+1)t h ,(r+2)t h` terms is the expansion of `(1+x)^(14)` are in A.P, then the largest value of `r` is.

If the coefficients of rth, (r+ 1)th and (r + 2)th terms in the expansion of (1 + x)^(1//4) are in AP, then r is /are

Q.3If the coefficients of the rth,(r+1)th&(r+2) thterms in the exp ansionof (1+x)^(14) are in AP,find r:

If the coefficients of rth,(r+1) th,and (r+2) th terms in the expansion of (1+x)^(14) are in A.P.then r is/are a.5 b.11 c.10d.9

If the coefficients of the (2r+4)th,(r-2)th term in the expansion of (1+x)^(18) are equal, then the value of r is.

If the coefficients of the rth, (r +1)th and (r + 2)th terms in the binomial expansion of (1 + y)^(m) are in A.P., then m and r satisfy the equation

Let n be a positive integer . If the cofficients of rth (r +1) th and (r +2)th terms in the expansion of (1 + x)^(n) are in AP, then find the relation between n and r .

If the coefficients of (2r +1)th and (4r + 5) th terms is the expansion of (1+x)^(10) are equal then r=?