next number in the sequence:

Hmmm.

60, 55, 51, 27, ??

To get from 60 to 55, you subtract 5. To get to 51, you subtract 4. To get to 27, you subtract 24 (or, 4 times 6). I wonder if it's at all significant that 51, 60 and 27 are all divisible by 3 (27 is a cube).

60 is 3 times 20. 51 is 3 times 17. 27 is 3 times 9.

Shanor posted this 3 weeks ago, it is his/her only posting, which makes me suspicious, I doubt the veracity of this riddle, or to put it in yorkshire terms I think it is a p**s take.