- Complete the series: 2, 4, 6, 8, ?
Answer: 10 - Complete the series: 5, 10, 15, 20, ?
Answer: 25 - Complete the series: 1, 4, 9, 16, ?
Answer: 25 - Complete the series: 2, 3, 5, 7, ?
Answer: 11 - Complete the series: 3, 6, 9, 12, ?
Answer: 15 - Complete the series: 8, 16, 32, ?
Answer: 64 - Complete the series: 1, 3, 6, 10, ?
Answer: 15 - Complete the series: 10, 20, 30, 40, ?
Answer: 50 - Complete the series: 0, 2, 4, 6, ?
Answer: 8 - Complete the series: 9, 18, 27, ?
Answer: 36 - Complete the series: 7, 14, 21, ?
Answer: 28 - Complete the series: 11, 22, 33, ?
Answer: 44 - Complete the series: 1, 8, 27, ?
Answer: 64 - Complete the series: 4, 8, 12, 16, ?
Answer: 20 - Complete the series: 3, 6, 12, 24, ?
Answer: 48
