EASY
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IMPORTANT
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The remainder when 20212023 is divided by 7 is

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Important Questions on Binomial Theorem

HARD
JEE Main
IMPORTANT
If the coefficient of x10 in the binomial expansion of x514+5x1360 is 5kl, where l,kN and l is coprime to 5, then k is equal to ______.
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JEE Main
IMPORTANT
If the sum of the coefficients of all the positive powers of x, in the binomial expansion of xn+2x57 is 939, then the sum of all the possible integral values of n is
HARD
JEE Main
IMPORTANT
If k=131Ck31Ck-131-k=130Ck30Ck-130=α60!30!31!, where αR, then the value of 16α is equal to
HARD
JEE Main
IMPORTANT
The number of positive integers k such that the constant term in the binomial expansion of 2x3+3xk12,x0 is 28·l, where l is an odd integer, is ______.
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IMPORTANT
The term independent of x in the expression of 1-x2+3x352x3-15x211,x0 is
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JEE Main
IMPORTANT
If the constant term in the expansion of 3x3-2x2+5x510 is 2k.l, where l is an odd integer, then the value of k is equal to
EASY
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IMPORTANT

Let n5 be an integer. If 9n-8n-1=64α and 6n-5n-1=25 β, then α-β is equal to:

MEDIUM
JEE Main
IMPORTANT
Let the coefficients of x-1 and x-3 in the expansion of 2x15-1x1515, x>0, be m and n respectively. If r is a positive integer such mn2=Cr15·2r, then the value of r is equal to ______.