Question
8, 12, 20, 32, 52, ?,
136 What will come in place of the question mark (?) in the following series?Solution
The given series follows the following pattern: number + preceding term 8 + 12 = 20 12 + 20 = 32 20 + 32 = 52 32 + 52 = 84 52 + 84 = 136
5, 11, 19, 29, 41, ?
12    16    43    ?       184    220
...36, 49, 23, 62, ?, 75
15Â Â Â Â Â Â Â Â Â Â Â Â 13 Â Â Â Â Â Â Â Â 28 Â Â Â Â Â Â Â Â Â Â Â Â Â Â 24 Â Â Â Â Â Â Â Â Â Â Â Â Â Â 54 Â Â Â Â Â Â Â Â 52
...5184, ?, 432, 144, 36, 12
17Â Â Â Â Â ? Â Â Â Â Â 2142 Â Â Â Â Â Â 12852 Â Â Â Â Â Â 64260Â Â Â Â Â Â 257040
...53 ? 55 49 57 47
...17 ? 33 44 57 72
...24 25 46 ? 572 2885
...0.5 1.5 5 ? 76 385
...