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completează seriile:a) 9000,8300,7600,.....,......,......,.......; b)1,.....,.......,1234,123,.....,...;c)5555,5644,6666,5655,7777,........,........​

Răspuns :

a) continuarea 6900, 6200,5500,4800.

b) chiar nu-mi dau seama

c) continuarea 5766,8000