40 ही संख्या मिळविण्यासाठी,  \(6\frac{2}{9}\) या संख्येला कोणत्या संख्येने गुणले पाहिजे?

1
\(7\frac{3}{7}\)
2
\(3\frac{5}{7}\)
3
\(7\frac{3}{6}\)
4
\(6\frac{3}{7}\)

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