(5) अलग-अलग चाबियों को (5) अलग-अलग ताले में आजमाने के क्रम कितने हैं यदि हर चाबी ठीक एक बार आजमाई जाए?

How many orders are possible for trying (5) distinct keys in (5) distinct locks if each key is tried exactly once?

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Correct Answer

C. (120)

Step 1

Concept

The orders of (5) distinct objects are (5!). When only order is asked, apply factorial directly.

Step 2

Why this answer is correct

The correct answer is C. (120). The orders of (5) distinct objects are (5!). When only order is asked, apply factorial directly.

Step 3

Exam Tip

(5) अलग वस्तुओं के क्रम (5!) होते हैं। केवल क्रम पूछा हो तो सीधा फैक्टोरियल लगाएं।

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Mathematics Answer, Explanation and Revision Hints

(5) अलग-अलग चाबियों को (5) अलग-अलग ताले में आजमाने के क्रम कितने हैं यदि हर चाबी ठीक एक बार आजमाई जाए? / How many orders are possible for trying (5) distinct keys in (5) distinct locks if each key is tried exactly once?

Correct Answer: C. (120). Explanation: (5) अलग वस्तुओं के क्रम (5!) होते हैं। केवल क्रम पूछा हो तो सीधा फैक्टोरियल लगाएं। / The orders of (5) distinct objects are (5!). When only order is asked, apply factorial directly.

Which concept should I revise for this Mathematics MCQ?

The orders of (5) distinct objects are (5!). When only order is asked, apply factorial directly.

What exam hint can help solve this Mathematics question?

(5) अलग वस्तुओं के क्रम (5!) होते हैं। केवल क्रम पूछा हो तो सीधा फैक्टोरियल लगाएं।