What number comes next in the series: 2, 8, 26, 80, 242, ?

💡 Solution & Explanation

Each term is the previous term × 3 + 2: 2 × 3 + 2 = 8, 8 × 3 + 2 = 26, 26 × 3 + 2 = 80, 80 × 3 + 2 = 242. So the next term is 242 × 3 + 2 = 728.