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Inatre care doaua patrate perfecte consecutiva se cuprinde 180,270,300,380

Răspuns :

Răspuns:

13·13=169 < 180 < 14·14=196

16·16=256 < 270 < 17·17=289

17·17=289 < 300 < 18·18=324

19·19=361 < 380 < 20·20=500