The tenth term of an A.P, is -37 and the sum of its first six terms is -27. Find the sum of its first eight terms.
Answers
Answered by
1
Solution :
- Tenth term of an A.P. is -37.
- Sum of it's first six terms is -27.
The sum of it's first 8th term.
We know that formula of an A.P;
- a is the first term.
- d is the common difference.
- n is the term of an A.P.
A/q
&
We know that formula of the sum of an A.P;
Putting the value of d in equation (1),we get;
Thus;
Similar questions