Question
5 3 4 7.5 17
? 138 Find the missing number in the following number series:Solution
5 x 0.5 + 0.5 = 3 3 x 1 + 1 = 4 4 x 1.5 + 1.5 = 7.5 7.5 x 2 + 2 = 17 17 x 2.5 + 2.5 = 45 45 x 3 + 3 = 138
Select the number from among the given options that can replace the question mark (?) in the following series.
24, 35, 51, 73, 102, ?
8 24 12 ? 18 54
18, 25, 33, 42, 52, 63, ?
3, 2, 3, 8, 31, ?
80, 255, 624, ?, 2400, 4095
24, 12, 18, ?, 157.5, 708.75
98 219 75 244 ? 273
102, 246, 442, 698, 1022, ?
70 191 47 216 ? 245
There are three series given below which are following with the same pattern.
Series I: 21, 44, 135, 544, 2725
Series II: 14, B, C, D, E