Mathematics · Number Systems and Equations
दो अंकों की एक संख्या अपने अंकों के योग की 7 गुना है। यदि अंकों को उलटने से बनी एक नई संख्या मूल संख्या से 18 कम है, तो मूल संख्या ज्ञात कीजिए।
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