Sum of the first 4 terms of an arithmetic sequence is 72. Sum of the first 9 terms is also 72. Find the sum of the first five terms.

Sum of the first 4 terms of an arithmetic sequence is 72. Sum of the first 9 terms is also 72. Write the sequence.

Sum of the first 4 terms of an arithmetic sequence is 72. Sum of the first 9 terms is also 72. What is the 5th term of the sequence?

The sum of first n terms of an arithmetic sequence is n^2+2n What is the first term?

The sum of first 9 terms of an arithmetic sequence is 45 and the sum of first 18 terms is 171. Find the sum of 5^(th) to 14^(th) terms.

Sum of first n terms of an arithmetic sequence is 8n^2 +5n. Find the sum of first 20 terms.

The first term of an arithmetic sequence is 1 and the sum of the first four terms is 100 . Find the first four terms:

The sum of the first five terms of an arithmetic sequence is 150 and the'sum of the first ten terms is 550 . i) What is the third term of the sequence? ii) What is the eighth term? iii) What are the first three terms of the sequence?

The sum of first 9 terms of an arithmetic sequence is 45 and the sum of first 18 terms is 171. Find its 14^(th) term.

The sum of first 9 terms of an arithmetic sequence is 45 and the sum of first 18 terms is 171. What is the sum of its 10^(th) to 18^(th) terms?

Sum of the first 15 terms of an arithmetic sequençe is 495 and sum of first 25 terms is 1325 . i) What is the common difference of this sequence? ii) What is the first term? iii) What is the sum of first n terms of this sequence?