56.
The difference between one term and the next is -2 x the previous difference. 88 to 120 is +32, so the next term is 120 - 64 = 56
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What should be the next number in the following series? 100 96 104 88 120 56
-4 +8 -16 +32 -64 +128 Next number in this sequence is 184
The next number in the sequence 100,96,104,88,120,56 is 184.The pattern is minus 4, plus 8, minus 16, plus 32, minus 64, plus 128
184
The sequence is formed from two interwoven series. 440, 216, 104, 48 ........Halve the number and subtract 4. 260, 128, 62, 29...........Halve the number and subtract 2. The next number would be generated by the first series 48/2 = 24 24 - 4 = 20..........which is the next number.