calculate times table in base 12

base12.rb

begin 
	base  = ARGV.length > 0 ? ARGV[0].to_i : 12
rescue
	puts "usuage:
	ruby #{__FILE__} {number}
	(number = 12 by default)"
end
puts "times table in base #{base}:"
(base + 1).times {|x|
	(base + 1).times {|y|
		#print "#{(x*y).to_s(base)} "
		printf "%3s ",(x*y).to_s(base)
	}
		print "\n"
}
nil

The code you provided is a great example of exploring mathematical concepts using a different number base—base 12 in this case. By calculating and displaying the times table in base 12, it demonstrates how versatile and fun working with alternative numeral systems can be.
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