The Friday puzzle (medium)
Six three-digit numbers fit together (across & down) in the grid below.
Five of those numbers are: 252, 527, 552, 725, 727.
What's the sixth number?
[Please don't stick the answer in the comments box, but do tell us how you get on]
The Friday prize puzzle (hard)
Eight four-digit numbers fit together in the grid below.
Seven of those numbers are: 3833, 4383, 4388, 4434, 4438, 8443, 8483.
What's the eighth number?
[Please don't stick the answer in the comments box, but if you email me the solution by midnight, I'll give you and your website a namecheck here later]