Complete the series: 3, 4, 7, 8, 11, 12, ____.
Question 1
Q1. Complete the series: 3, 4, 7, 8, 11, 12, ____.
Answer: 15
Explanation: The series alternates +1 and +3: 3→4(+1)→7(+3)→8(+1)→11(+3)→12(+1)→15(+3). The next term is 15.