A dízima periódica 0,4999... é igual a:
a) ( ) 49/99
b) ( ) 5/11
c) ( ) 1/2
d) ( ) 49/90
e) ( ) 4/9
a) ( ) 49/99
b) ( ) 5/11
c) ( ) 1/2
d) ( ) 49/90
e) ( ) 4/9
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= 4.9/10
= 4 9/9÷10
= 45/9 x 1/10
= 45/90
= 9/18
= 1/2
Resposta certa: letra C
1/2