Question

Find the 50th term of the following arithmetic sequence.
3, 9, 15, 21,

Answer 1

Answer: 297

Explanation:

Based on the 4 terms given in the sequence, we can determine the rule to be: 6n - 3

1s term: 6(1) - 3 = 3

2nd: 6(2) - 3 = 9

3rd: 6(3) - 3 = 15

4th: 6(4) - 3 = 21

∴ 50th term = 6(50) - 3 = 297