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Daca a,b,c sunt cifre in baza zece si abc+bca+cab=2664 atunci a+b+c=…

Răspuns :

abc+bca+cab=2664
100a+10b+c+100b+10c+a+100c+10a+b=2664
111a+111b+111c=2664
111(a+b+c)=2664
a+b+c=2664:111
a+b+c=24