1.

\[1+\frac{2}{1+\frac{3}{1+\frac{4}{5}}}=?\]

A. \[\frac{7}{4}\]                          
B. \[\frac{4}{7}\]
C.  \[\frac{7}{5}\]                         
D. \[\frac{3}{7}\]
Answer» B. \[\frac{4}{7}\]


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