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?

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. Find the sum of the first five 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 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. What is its 5^(th) term?

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

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 second term of an arithmetic sequence is 8 and the common difference is 3. What is the 12^(th) term 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.