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Suppose 28-p, p, 70-α, α are the coefficient of four consecutive terms in the expansion of (1+x)n. Then the value of 2α-3p equals

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Important Questions on Binomial Theorem

EASY
The number of terms in the expansion of x2+y225-x2-y225 after simplification is
HARD

The number of terms in the expansion of 1+x1011-x+x2100 in powers of x is

MEDIUM
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:
EASY
If [x] represents the greatest integer not greater than x, then 1+11000010000=
MEDIUM
The value of 21C1-10C1+21C2-10C2+21C3-10C3+21C4-10C4++21C10-10C10 is
MEDIUM
If α and β are the coefficients of x8 and x-24, respectively, in the expansion of x4+2+1x410 in powers of x, then αβ is equal to
MEDIUM
The coefficient of x 1 0 1 2   in the expansion of 1+xn+x25310, (where n≤22 is any positive integer), is
MEDIUM
Let M=230-215+1, and M2 be expressed in base 2. The number of 1's in this base 2 representation of M2 is
EASY
If 27999 is divided by 7, then the remainder is
HARD
If the coefficients of x3 and x4 in the expansion of 1+ax+bx21-2x18 in powers of x are both zero, then a,b is equal to
HARD
The fractional part of a real number x is x-x, where x is the greatest integer less than or equal to x. Let F1 and F2 be the fractional parts of 44-20172017 and 44+20172017 respectively. Then F1+F2 lies between the numbers
EASY
If the sum of the coefficients in the expansion of x+yn is 1024, then the value of the greatest coefficient in the expansion, is
HARD
If {p} denotes the fractional part of the number p, then 32008 is equal to
MEDIUM
The expression 1(3x+1)1+3x+127-1-3x+127 is a polynomial in x of degree
EASY
The number of dissimilar terms in the expansion of a+bn is n+1. So the number of dissimilar terms in the expansion of a+b+c12 is
MEDIUM
Let 1+x+2x220=a0+a1x+a2x2++a40x40, then a1+a3+a5++a37 is equal to
MEDIUM
If X=4n-3n-1 : nN  and Y=9n-1 : nN, where N is the set of natural numbers, then XY is equal to
MEDIUM
If the coefficient of the three successive terms in the binomial expansion of 1+xn are in the ratio 1:7:42, then the first of these terms in the expansion is