JEE Main Questions
Find the coefficient of xn
in the expansion of (1−9x+20x2)−1˙
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Find the greatest term in the expansion of 3(1+31)20˙
are ositive, then prove that the coefficients of xpandxq
in the expansion of (1+x)p+q
will be equal.
Find the last three digits of the number 2727˙
Find the rthterm from the end in the expansion of (x+a)n.
Which is larger (1.01)10000000or 10,000?
Find the sum i=0∑r.n1Cr−i.n2Ci .
then find the coefficient of xn
in the expansion of (1+2x+3x2+4x3+)1/2˙
Find (x+1)6+(x−1)6. Hence or otherwise evaluate (2+1)6+(2−1)6.