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Let (1+x^(2))^(2) (1+x)^(n) = underset(k...

Let `(1+x^(2))^(2) (1+x)^(n) = underset(k = 0)overset(n+4)suma_(k)x^(k)`.. If `a_(1), a_(2)` and `a_(3)` aer in arithmetic progression, then the possible value/values of n is/are

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CENGAGE PUBLICATION-BINOMIAL THEOREM-All Questions
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  2. Find the geometric mean between2a and 8a^3

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  3. Let (1+x^(2))^(2) (1+x)^(n) = underset(k = 0)overset(n+4)suma(k)x^(k)....

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  4. The middle term in the expansion of (x/2+2)^8 is 1120, then x in R is...

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  5. The sum of three numbers of GP is 39/10 and their product is 1. Find...

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  6. The first two term of a G.P are 125, and 25 respectively. Find the 5t...

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  7. If underset(r=0)overset(n)sum((r+2)/(r+1)).^(n)C(r)=(2^(8)-1)/(6). the...

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  8. Let f(x) = a(0) + a(1)x + a(2)x^(2) + "…." + a(n)x^(n) + "…." abd (f(x...

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  9. If (1+x^(2))^(n) = underset(r=0)overset(n)suma(r)x^(r )= (1+x+x^(2)+x^...

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  10. The value of sum(r=1)^(n+1)(sum(k=1)^n^kC(r-1)) (where r, k, n in N) i...

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  11. If (x^(2)+x+1)/(1-x) = a(0) + a(1)x+a(2)x^(2)+"….", then sum(r=1)^(50...

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  12. Find dy/dt , if y = (1 - cost)/(1 + cost) is

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  13. The coefficient of x^9 in the expansion of (1+x)(1+x^2)(1+x^3)....(1+x...

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  14. The coefficients of three consecutive terms of (1+x)^(n+5) are in the ...

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  15. If (1-x)^(-n)=a0+a1x+a2x^2++ar x^r+ ,t h e na0+a1+a2++ar is equal to ...

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  16. The value of sum(r=0)^(20)r(20-r)(^(20)Cr)^2 is equal to ?

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  17. The coefficient of x^(10) in the expansion of (1+x^(2)-x^(3))^(8) is

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  18. If the term independent of x in the (sqrt(x)-k/(x^2))^(10) is 405, the...

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  19. The coefficient of x^2y^3 in the expansion of (1-x+y)^(20) is (a)(20 !...

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  20. The coefficient of x^5 in the expansion of (x^2-x-2)^5 is

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