Solved papers for JEE Main & Advanced AIEEE Solved Paper-2006

done AIEEE Solved Paper-2006 Total Questions - 1

• question_answer1) If\[{{a}_{1}},{{a}_{2}},....{{a}_{n}}\]are in HP, then the expression\[{{a}_{1}}{{a}_{2}}+{{a}_{2}}{{a}_{3}}+,....+{{a}_{n-1}}{{a}_{n}}\]is equal to       AIEEE  Solved  Paper-2006
  A)
  \[(n-1)({{a}_{1}}-{{a}_{n}})\]
  done clear
  B)
         \[n{{a}_{1}}{{a}_{n}}\]  
  done clear
  C)
         \[(n-1){{a}_{1}}{{a}_{n}}\]           
  done clear
  D)
         \[n({{a}_{1}}-{{a}_{n}})\]
  done clear
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