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Problema de olimpiada cls 5a

Posted: Sun Mar 08, 2009 6:23 pm
by Al3xx
\( a) \)Aflati ultima cifra a numarului : \( N\ =\ 1\ \cdot\ 3\ \cdot\ 5\ ...\ \cdot\ 99. \)

\( b) \)In cate cifre de \( 0 \) se termina numarul : \( N\ =\ 1\ \cdot\ 2\ \cdot\ 3\ \cdot\ ...\ \cdot\ 100\ ? \)

Posted: Sun Mar 08, 2009 6:31 pm
by alex2008
Punctul b) sub o alta forma aici

Posted: Sun Mar 08, 2009 6:46 pm
by miruna.lazar
a) n-am facut niste calcule dar am impresia ca e 5 ... :oops:

Posted: Sun Mar 08, 2009 6:56 pm
by BogdanCNFB
La punctul b) sunt 24 zerouri.