(8) अलग-अलग अक्षरों में से (5) अक्षरों के पासवर्ड कितने बनेंगे यदि कोई अक्षर दोहराया नहीं जाए?

How many (5)-letter passwords can be formed from (8) distinct letters if no letter is repeated?

Explanation opens after your attempt
Correct Answer

A. (6720)

Step 1

Concept

Order matters in a password, so \(^{8}P_5=6720\). In exams, treat passwords as arrangements.

Step 2

Why this answer is correct

The correct answer is A. (6720). Order matters in a password, so \(^{8}P_5=6720\). In exams, treat passwords as arrangements.

Step 3

Exam Tip

पासवर्ड में क्रम महत्वपूर्ण है, इसलिए \(^{8}P_5=6720\)। परीक्षा में पासवर्ड को arrangement की तरह लें।

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Mathematics Answer, Explanation and Revision Hints

(8) अलग-अलग अक्षरों में से (5) अक्षरों के पासवर्ड कितने बनेंगे यदि कोई अक्षर दोहराया नहीं जाए? / How many (5)-letter passwords can be formed from (8) distinct letters if no letter is repeated?

Correct Answer: A. (6720). Explanation: पासवर्ड में क्रम महत्वपूर्ण है, इसलिए \(^{8}P_5=6720\)। परीक्षा में पासवर्ड को arrangement की तरह लें। / Order matters in a password, so \(^{8}P_5=6720\). In exams, treat passwords as arrangements.

Which concept should I revise for this Mathematics MCQ?

Order matters in a password, so \(^{8}P_5=6720\). In exams, treat passwords as arrangements.

What exam hint can help solve this Mathematics question?

पासवर्ड में क्रम महत्वपूर्ण है, इसलिए \(^{8}P_5=6720\)। परीक्षा में पासवर्ड को arrangement की तरह लें।