Make a constant of 21 to hex the conundrum

Please post all Puzzler enquiries and contributions to: Jim Howson, 5 Hilltop Gardens, Dartford, Kent DA1 5JF Return...

Jim Howson

Please post all Puzzler enquiries and contributions to: Jim Howson, 5 Hilltop Gardens, Dartford, Kent DA1 5JF

This was last published in November 2008

AI legend and online education pioneer Andrew Ng has developed an AI playbook for businesses. Here are six must-dos.

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