-4/3, -1 , -2/3......41/3. Find the sum of two middle most term of the A.P

Asked by  | 4th Jan, 2013, 10:32: AM

Expert Answer:

to find the sum of two middlemost terms we should first find no. of terms.
using nth term =a+(n-1)d
               41/3=-4/3+(n-1)1/3
                45=n-1
               n=46
           so there will be two middle terms
            also we know that
      t1+t46=t2+t45=.................=t23+t24
     so sum of two middle terms =t1+t46=37/3

Answered by  | 4th Jan, 2013, 10:40: PM

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