Răspunsuri

2014-11-16T16:25:55+02:00
Abc = 100a+10b+c
bca=100b+10c + a
cab = 100c + 10a +b
abc+bca+cab = 100(a+b+c) + 10(a+b+c) + (a+b+c)
Dar (a+b+c) : 3 = 8 
a+b+c = 24
Inlocuim in relatia de mai sus : 
abc  + bca+ cab = 100 * 24 + 10* 24 + 24 = 2400 + 240+24 = 2664
Media aritmetica = ( ac+bca+cab) :3 = 2664 : 3 = 888 
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