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If f(x)=(x-1)(x-2)(x-3).......(x-50) fi...

If `f(x)=(x-1)(x-2)(x-3).......(x-50)` find coeff. of `x^50` and `x^49`

A

`-2250`

B

`-1275`

C

`1275`

D

2250

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The correct Answer is:
B
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DISHA PUBLICATION-BINOMIAL THEOREM -EXERCISE-2 (CONCEPT APPLICATOR)
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  2. Find the coefficient of x^5 in (1+2x+3x^2...........)^(-3/2)

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  3. If f(x)=(x-1)(x-2)(x-3).......(x-50) find coeff. of x^50 and x^49

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  6. If (1 + ax)^n= 1 +8x+ 24x^2 +..... then the value of a and n is

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  7. The sum of the series (2)/(1!) + (4)/(3!) + (6)/(5!) + ……. "to" oo ...

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  8. If coefficient of a^2b^3c^4in(a+b+c)^m(w h e r em in N)i sL(L!=0) , t...

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  10. The sum of rational term in (sqrt(2)+3 3+5 6)^(10) is equal to 12632 b...

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  11. If the 7th tern in the binomial expansion of (3/((84)^(1/3)) +sqrt(3) ...

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  12. If (+x)^n=sum(r=0)^n ar x^r&br=1+(ar)/(a(r-1))&prod(r=1)^n br=((101)^...

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  13. The coefficients of x^(13) in the expansion of (1 - x)^(5) (1 + x...

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  14. If x is so small that x^3 and higher powers of x may be neglectd, then...

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  15. If (r+1)^(th) term is (3.5...(2r-1))/(r!) (1/5)^(r), then this is th...

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  17. If the third in the expansion of [x + x^(log 10x)]^(6) is 10^(6) ,...

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  18. For what value of x is the ninth term in the expansion of (3^(log3 sqr...

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  20. If T0,T1, T2, ,Tn represent the terms in the expansion of (x+a)^n , t...

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