A particular sequence is 1, 3, 6, 10, 15. What comes next?
Question 1
Q1. A particular sequence is 1, 3, 6, 10, 15. What comes next?
Answer: 21
Explanation: The pattern is formed by adding 2, 3, 4, 5, and so on. The next difference is 6, so 15 + 6 = 21.