Question

Află numerele naturale de forma abc care au produsul cifrelor : 12; 24; 28.

Answer 1

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abc  => a*b*c=12
126  => 1*2*6=12
162  => 1*6*2=12
216  => 2*1*6=12
261  => 2*6*1=12
612  => 6*1*2=12
621  => 6*2*1=12

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abc  =>a*b*c=24
138 =>1*3*8=24
183 =>1*8*3=24
318 =>3*1*8=24
381 =>3*8*1=24
813 =>8*1*3=24
831 =>8*3*1=24

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abc =>a*b*c=28
147 =>1*4*7=28
174 =>1*7*4=28
417 =>4*1*7=28
471 =>4*7*1=28
714 =>7*1*4=28
741 =>7*4*1=28