Solved papers for JEE Main & Advanced JEE Main Solved Paper-2016

done JEE Main Solved Paper-2016 Total Questions - 1

• question_answer1) If the number of terms in the expansion of \[{{\left( 1-\frac{2}{x}+\frac{4}{{{x}^{2}}} \right)}^{n}},x\ne 0,\] , is 28, then the sum of the coefficients of all the terms in this expansion, is :- [JEE Main Solved Paper-2016 ]
  A)
  729        
  done clear
  B)
  64
  done clear
  C)
  2187                      
  done clear
  D)
  243
  done clear
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