JEE Main Questions
Find the term independent of x in the expansion of (1+x+2x3)[(3x2/2)−(1/3x)]9
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Find the sum r=1∑nr2nCr−1nCr
If the coefficient of 4th term in the expansion of (a+b)n is 56, then n is
Find the coefficient of x20
Find the value of x,
for which 1/(5+4x)
can be expanded as infinite series.
Find the remainder when 16902608+26081690
is divided by 7.
If the coefficients of three consecutive terms in the expansion of (1+x)n
are in the ratio 1:7:42, then find the value of n˙
Find a, b and n in the expansion of (a+b)nif the first three terms of the expansion are 729, 7290 and 30375, respectively.
term is the first negative term in the expansion of (1+x)7/2,
then find the value of r˙