अंकों (1,2,3,4,5,6,7) से बिना पुनरावृत्ति (5) अंकों की कितनी संख्याएं बनेंगी जो (5) पर समाप्त हों?

How many (5)-digit numbers can be formed from (1,2,3,4,5,6,7) without repetition and ending in (5)?

Explanation opens after your attempt
Correct Answer

A. (360)

Step 1

Concept

The last digit is fixed as (5), and the remaining (4) places are filled in \(^{6}P_4\) ways. So the answer is (360).

Step 2

Why this answer is correct

The correct answer is A. (360). The last digit is fixed as (5), and the remaining (4) places are filled in \(^{6}P_4\) ways. So the answer is (360).

Step 3

Exam Tip

अंतिम अंक (5) निश्चित है और बाकी (4) स्थान \(^{6}P_4\) तरीकों से भरेंगे। इसलिए उत्तर (360) है।

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Mathematics Answer, Explanation and Revision Hints

अंकों (1,2,3,4,5,6,7) से बिना पुनरावृत्ति (5) अंकों की कितनी संख्याएं बनेंगी जो (5) पर समाप्त हों? / How many (5)-digit numbers can be formed from (1,2,3,4,5,6,7) without repetition and ending in (5)?

Correct Answer: A. (360). Explanation: अंतिम अंक (5) निश्चित है और बाकी (4) स्थान \(^{6}P_4\) तरीकों से भरेंगे। इसलिए उत्तर (360) है। / The last digit is fixed as (5), and the remaining (4) places are filled in \(^{6}P_4\) ways. So the answer is (360).

Which concept should I revise for this Mathematics MCQ?

The last digit is fixed as (5), and the remaining (4) places are filled in \(^{6}P_4\) ways. So the answer is (360).

What exam hint can help solve this Mathematics question?

अंतिम अंक (5) निश्चित है और बाकी (4) स्थान \(^{6}P_4\) तरीकों से भरेंगे। इसलिए उत्तर (360) है।