dclady wrote:2x2=4
3x3x3=27
4x4x4x4=256
Ah. So it wasn't that we needed to group the hundreds digits, tens digits, and ones digits separately, it was that we needed to write the various numbers, in order, as an undifferentiated (un-comma-delimited) string, and then look for patterns.
Note for those lacking calculators on-hand (or on-desktop): You can do the calculations with various online calculators, such as
this one. Use the carat key (as we've been doing here) to indicate exponents. So "three cubed" would be entered as "3^3".
Note regarding earlier-posited solutions: The seventh hour's digging does
not move 7xx additional cubic meters of earth.
Eliz.