The answer depends on where in the sequence the missing number is.
The sequence could be:
-108, 12, 24, 36, 96, 192
12, 36, 24, 36, 96, 192
12, 24, 18, 36, 96, 192
12, 24, 36, 54, 96, 192
12, 24, 36, 96, 180, 192
12, 24, 36, 96, 192, 252
So take your pick. And next time, please try to specify where the missing number should be!
The factor is 4. 12288/192 = 64 ie 4 cubed, so it is the next term but two, ie the seventh. (192, 768, 3072, 12288)
16
96
There appears to be a number missing in the sequence - as the difference of the differences is equal to 12 each time, apart from between 221 and 323, where the difference is 24.
Ascending terms in the sequence are equal to 12, 32, 52, __, 92, and, for some reason, 102, not 112. Therefore, assuming the last term in the sequence to be 112 = 121, the fourth term in the sequence is 72 = 49.
The answer depends on where, within the sequence, the missing number should have been.
29
The factor is 4. 12288/192 = 64 ie 4 cubed, so it is the next term but two, ie the seventh. (192, 768, 3072, 12288)
16
There does not appear to be a missing number. The sequence is n2 + 1. 12 + 1 = 2 : 22 + 1 = 5 : 52 + 1 = 26 : 262 + 1 = 677. The next number in the sequence is 6772 + 1 = 458330.
14
96
There appears to be a number missing in the sequence - as the difference of the differences is equal to 12 each time, apart from between 221 and 323, where the difference is 24.
192
3 (the start point) 3 * 4 = 12 12 * 4 = 48 48 * 4 = 192 192 * 4 = 768 768 * 4 = 3072 3072 * 4 = 12288 12288 * 4 =49152 49152 * 4 = 196608 ......... and so on
Ascending terms in the sequence are equal to 12, 32, 52, __, 92, and, for some reason, 102, not 112. Therefore, assuming the last term in the sequence to be 112 = 121, the fourth term in the sequence is 72 = 49.
It could be either. The answer depends on how many terms if any are between 48 and 192.