Question

The sum of 20 terms is 880 the sum. Of first and last term is 88. What is the common. Difference

Answer 1

Answer:

Step-by-step explaination

First and Last terms are 88 means 88+88=176

So when we used to two terms then no. of terms left =20-2=18

Now we have to find common so common will be :-

First we will subtract 176 from 880

=704

Secondly we will divide 704 by 18

=704/18=38

And difference =176-38=138