Capable of being challenged or disputed

चुनौती देने योग्य

English Usage: The rules of the game are challengeable if they are unfair.

Hindi Usage: खेल के नियम चुनौती देने योग्य हैं यदि वे अन्यायपूर्ण हैं।

Something that poses difficulty or requires effort to overcome

चुनौती

English Usage: The exam was a challenge for many students.

Hindi Usage: परीक्षा कई छात्रों के लिए एक चुनौती थी।