Respostas

2014-08-01T14:45:42-03:00
A )

\boxed{7!~\to~7*6*5*4*3*2*1=5040}

b )

\boxed{(13-6)!=7!=5040}

c )

\boxed{ \frac{9!*6!}{7!*10!}~\to~ \frac{\not9!*\not6!}{7*\not6!*10*\not9!} ~\to~  \frac{1}{70} }

d )

3!+4!*2-4*5!\\
6+24*2-4*120\\54-480\\-426

e )

5!*3*4-(-2+3*2+3)!\\5!*12-(-7)!\\5!*12+(7)!\\1440+5040\\6480
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