The numbers are in a sequence: 4, 7, 12, 19, 28, ?. What is the next number?
Q1. The numbers are in a sequence: 4, 7, 12, 19, 28, ?. What is the next number?
Answer: 39
Explanation: The pattern is formed by adding 3, 5, 7, 9, 11, ... to the previous term, so the next number is 28 + 11 = 39.