Question

how to solve this number series of math 27 54 86 ? 187 272

Answer 1

found that the value 



 looks like it fits. I looked at the differences of differences (using Excel) as follows:

27 diff 54 27 diff 86 32 5 diff 128 42 10 5 diff 187 59 17 7 2 diff 272 85 26 9 2 0 ===============================
ans 128