Binomial Theorem · NDA previous year questions

2011 3 questions

1. Q682011 · 21 Aug 2011

   What is the ratio of coefficient of $x^{15}$ to the term independent of x in ${\left(x^2+\frac{2}{x}\right)}^{15}$?

   1. A.$1/64$
   2. B.$1/32$
   3. C.$1/16$
   4. D.$1/4$
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   Answer: B

2. Q692011 · 21 Aug 2011
   
   1. A.$-abc$
   2. B.$abc$
   3. C.0
   4. D.1
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   Answer: B

3. Q462011 · 17 Apr 2011

   What is the middle term in the expansion of ${\left(1-\frac{x}{2}\right)}^8$?

   1. A.$\frac{35x^4}{8}$
   2. B.$\frac{17x^5}{8}$
   3. C.$\frac{35x^5}{8}$
   4. D.None of the above
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   Answer: A