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Stiind ca a=7,b=2,c=1 calculeaza

abc × bac =
aaa × acc =


Răspuns :

721×271=195391
777×711=552447
abc=100a+10b+c=700+20+1=721
bac=100b+10a+c=200+70+1=271
721×271=195391
aaa=100a+10a+a=700+70+7=777
acc=100a+10c+c=700+10+1=711
aaa×acc=552447
Am lucrat in baza zece.