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transformați în grade :
120',180',360',420',660',900',1260',4200'


Răspuns :

120'=2grade
180'=3grade
360'=6grade
420'=7grade
660'=11grade
900'=15grade
1260'=21grade
4200'=70grade
120'=2*
180'=3*
360'=6*
420'=7*
660'=11*
900'=15*
1260'=21*
4200'=70*