In the pattern 2, 4, 6, 8, what is the 10th term?

In the pattern 2, 4, 6, 8, what is the 10th term?

• A. 18
• B. 20
• C. 22
• D. 24

Answer: (B)

This pattern adds 2 each time, so it’s an arithmetic sequence with a1 = 2 and common difference 2. The 10th term is a1 + (10−1)d = 2 + 9×2 = 20. Listing the terms shows the tenth one as 20: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20.

This pattern adds 2 each time, so it’s an arithmetic sequence with a1 = 2 and common difference 2. The 10th term is a1 + (10−1)d = 2 + 9×2 = 20. Listing the terms shows the tenth one as 20: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20.