1.

(i) Find the value of r, if the coefficients of (2r + 2)th and (r-2)th terms in the expansion of (1+x)^{18} are equal. (ii) Find the coefficient of x−17 in the expansion of (x4−1x3)15 (iii) Find the term independent of x in the expansion of (2x−1x)10

Answer»

(i) Find the value of r, if the coefficients of (2r + 2)th and (r-2)th terms in the expansion of (1+x)^{18} are equal.

(ii) Find the coefficient of x17 in the expansion of (x41x3)15

(iii) Find the term independent of x in the expansion of (2x1x)10



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