Question

Find the middle term of the a.p 213,205,197_,37

Answer 1

First of all, it is necessary to find out the numbers of terms found in Arithmetic progression whose difference is 8.

37= 21+(n-1)-8.

The n is 21 so there are 21 terms in AP.

To find out the middle term, you have to find the 11th term which is 213+(11-1)-8 = 133.