What is the next number in the series: 5, 13, 25, 41, 61, ____?
Q1. What is the next number in the series: 5, 13, 25, 41, 61, ____?
Answer: 85
Explanation: The differences between terms are 8, 12, 16, 20 (increasing by 4); the next difference is 24, giving 61 + 24 = 85.