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completează cu numerele potrivite :
3245,3255,
1516,1508,
4536,4736,
3499,5499


Răspuns :

3245,3255,3265,3275.3285,3295....
1516,1508,1500,1492,1484,1476,1468,1460....
4536,4736,4936,5136,5336,5536,5736,5936....
3499,5499.7499,9499.....