105. What is the sum of all two-digit natural numbers that are multiples of 7? (1) $721$ (2) $728$ (3) $735$ (4) $742$
\noindent\textbf{105.} What is the sum of all two-digit natural numbers that are multiples of 7?
\hfill (1) $721$ \hfill (2) $728$ \hfill (3) $735$ \hfill (4) $742$
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