3, 7, 15, 27, 63, 127, 255?

More Questions from Odd Man Out and Series

• 7, 8, 18, 57, 228, 1165, 6996?
• Find out the wrong number in the series 125, 106, 88, 76, 65, 58, 53?
• 1, 5, 14, 30, 50, 55, 91?
• Find out the next term in the series 7, 11, 13, 17, 19, ...
• Find the missing term 6,?, 21, 33, 48
• Find the value of the expression 1 - 2 + 3 - 4 + 5 - 6 + 7 + .... upto 100 terms .?
• If A represents the arithmetic mean, H represents the harmonic mean and G represents the geometric mean, then what is the relation between them?
• 4, 12, 36,?, 324, 972
• ...., 9, 25, 49, 81, 121?
• 12, 15, 21, 30, 42, 57,?

Discussion & Comments