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a fost răspuns

descopera regula si completeaza fiecare sir a)25,500,10000,...... b)300,900,2700 c) ......,40,200,1000 d) ...., 60,1800,54000,....

Răspuns :

Andreiiaka47
a) 25,500,10000,250000,5000000,10000000.
Sergiutataru2
a)20000,4000000
b)8100,24300
c)8
d)2,60,1800,54000,1620000