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Mareste toate numerele pare de forma 15a, unde a>3 : a) cu 238;527; b) cu 461;350, c) cu 579;466.

Răspuns :

nr pot fii. 150 si 152. a)238+150=388,527+152=677,238+152=390,527+152=679. b)461+150=611,350+152=500,461+152=613,350+152=502. c)579+150=729,466+150=616 ,579+152=731,466+152=618.