Complete the series : 1, 3, 6, 10, 15,...... 28, 36
Complete the series : 1, 8, 27, 64,:.....216
Complete the series : 1, 9, 25, 49, .... ?
Complete the series : 15, 51, 105,....?
Complete the series : 2, 5, 10, 13, 26, 29,....?
Complete the series : 25, 20, 15, 20,....?
Complete the series : 3 : 12 :: 5 : ?
Complete the series : 3, 11, 38, 102 , 227, ?
Complete the series : 3, 12, 27, 48, 75, 108,
Complete the series : 3, 7, 15, 31,.....?