JEE Main Questions
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Find the number of irrational terms in the expansion of (51/6+21/8)100˙
Find the constant term in the expansion of (x−1/x)6˙
if the 7th and 18th terms of the expansion (2+a)50
Find the coefficient of x5 in (x+3)8
If (1+x+x2)n=a0+a1x+a2x2++a2nx2n, find the value of a0+a3+a6++,n∈N˙
Find the rthterm from the end in the expansion of (x+a)n.
Find the sum i=0∑r.n1Cr−i.n2Ci .
Find the coefficient of xn
in the expansion of (1−9x+20x2)−1˙