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Gasiti urmatorii 2 termeni ai sirului:

3, 4, 6, 8, 12, 14, 18, 20, 24, 30, ?, ??

Explicati cum ati gasit termenii.


Răspuns :

[tex]Voi~scrie~sirul~numerelor~prime: \\ \\ 2,~3,~5,~7,~11,~13,~17,~19,~23,~29,~31,~37,~41... \\ \\ Adunand~1~fiecarui~termen,~obtinem~sirul: \\ \\ 3,~4,~6,~8,~12,~14,~18,~20,~24,~30,~\boxed{32,~38},~42,...,~adica~exact~sirul~ \\ \\ nostru~ :).[/tex]