1.

What is the sum of the greatest and the least numbers of \[\frac{5}{9},\frac{1}{9}\] and \[\frac{11}{9}\]?

A.  \[\frac{2}{9}\]                                  
B.                         \[\frac{4}{9}\]                  
C.                         \[\frac{4}{3}\]                                  
D.                         \[\frac{2}{3}\]
Answer» D.                         \[\frac{2}{3}\]


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