In an arithmetic sequence, each successive term is either greater than or less than the preceding term by the same amount. What is the tenth term of the arithmetic sequence 30, 27, 24, . . . ?
Explanation
Each successive term is 3 less than the preceding term. Here’s the series of ten terms: {30, 27, 24, 21, 18, 15, 12, 9, 6, 3}. Including the first term (30), the tenth term in the series is 3.