Question

Aflati a si b saca media aritmetica a numerelor abba, aba, aa, bb este 1375

Answer 1

(abba+aba+aa+bb):4=1375
abba+aba+aa+bb=5400
1001a+110b+101a+10b+11a+11a=5400
1102a+120b+11a+11b=5400
1113a+131b=5400
Daca a=4:
4452+131b=5400
131b=948
Daca efectuam impartirea vom avea rest<=>a≠4
Daca a=3:
3339+131b=5400
131b=2061
Daca efectuam impartirea vom avea rest<=>a≠3
Daca a=2:
2226+131b=5400
131b=3174
Daca vom efectua impartirea vom avea din nou rest<=>a≠2
Daca a=1:
1113+131b=5400
131b=4287
Daca vom efectua impartitrea vom avea din nou rest<=>a≠1


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