(6) अलग-अलग चाबियों को (6) अलग-अलग ताले के सामने कितने तरीकों से रखा जा सकता है?
In how many ways can (6) distinct keys be placed against (6) distinct locks?
Explanation opens after your attempt
Correct Answer
A. (720)
Concept
The arrangement of six distinct objects in six distinct positions is (6!=720). In exams, use factorial when matching positions are distinct.
Why this answer is correct
The correct answer is A. (720). The arrangement of six distinct objects in six distinct positions is (6!=720). In exams, use factorial when matching positions are distinct.
Exam Tip
छह अलग वस्तुओं का छह अलग स्थानों पर विन्यास (6!=720) है। परीक्षा में matching positions अलग हों तो factorial लगाएं।
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