a.What twodigit number equals the product of units' digit by the factorial of tens' digit?
b. What if a nondecimal system (base below ten) were allowed?
(In reply to
re: beyond base 10, analytical solution....TBC by Ady TZIDON)
Judging by the title "beyond base 10" I'm sure Daniel had in mind extending the puzzle to bases higher than ten, such as the following computergenerated cases:
base the two digits
5 3 3
10 3 6
15 3 9
20 3 12
23 4 4
25 3 15
The only assurance needed is that the base is at least one higher than either of the digits.

Posted by Charlie
on 20180601 08:45:40 