In the series 3, 9, 15, ...... what will be the 21st term?

More Questions from Series Completion

• 28, 33, 31, 36,?, 39
• 1, 9, 25, 49, 81,?
• 1, 9, 25, 49,?, 121
• 2,2,5, 13,28,?
• 0, 2, 8, 14,?, 34
• 1, 5, 14, 30, 55, 91,?
• In the series 10, 17, 24, 31, 38,.....which of the following will be a number of the series?
• 240,?, 120, 40, 10, 2
• 2,3,8,27, 112,?
• 6, 17, 39, 72,?

Discussion & Comments