HARD
JEE Main
IMPORTANT
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If the fourth term in the Binomial expansion of 2x+xlog8x6, x>0 is 20×87, then a value of x is

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Important Questions on Binomial Theorem

MEDIUM
JEE Main
IMPORTANT
If some three consecutive coefficients in the binomial expansion of x+1n in powers of x are in the ratio 2:15:70, then the average of these three coefficients is:
MEDIUM
JEE Main
IMPORTANT
If the fractional part of the number 240315 is k15, then k is equal to
EASY
JEE Main
IMPORTANT
The coefficient of t4 in the expansion of 1-t61-t3 is
MEDIUM
JEE Main
IMPORTANT
The sum of the co-efficient of all even degree terms in x in the expansion of x+x3-16+x-x3-16, x>1 is equal to
MEDIUM
JEE Main
IMPORTANT
The sum of the series 2.20C0+5.20C1+8.20C2+11.20C3+.......+62.20C20 is equal to
HARD
JEE Main
IMPORTANT
If the fourth term in the binomial expansion of x11+log10x+x1126 is equal to 200, and x>1, then the value of x is
MEDIUM
JEE Main
IMPORTANT
If the coefficients of x2 and x3, are both zero, in the expansion of the expression 1+ax+bx21-3x15, in powers of x , then the ordered pair a,b is equal to
MEDIUM
JEE Main
IMPORTANT
The smallest natural number n , such that the coefficient of x in the expansion of x2+1x3n is C23 n , is