अंकों (1,2,4,5,7,8,9) से बिना पुनरावृत्ति (4) अंकों की कितनी संख्याएं (7000) से बड़ी होंगी?

How many (4)-digit numbers greater than (7000) can be formed from (1,2,4,5,7,8,9) without repetition?

Explanation opens after your attempt
Correct Answer

A. (360)

Step 1

Concept

The thousands place has (3) choices from (7,8,9), and the remaining places have \(6\cdot5\cdot4\) ways. The total is (360).

Step 2

Why this answer is correct

The correct answer is A. (360). The thousands place has (3) choices from (7,8,9), and the remaining places have \(6\cdot5\cdot4\) ways. The total is (360).

Step 3

Exam Tip

हजार स्थान पर (7,8,9) में से (3) विकल्प हैं और बाकी \(6\cdot5\cdot4\) तरीके हैं। कुल (360) है।

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Mathematics Answer, Explanation and Revision Hints

अंकों (1,2,4,5,7,8,9) से बिना पुनरावृत्ति (4) अंकों की कितनी संख्याएं (7000) से बड़ी होंगी? / How many (4)-digit numbers greater than (7000) can be formed from (1,2,4,5,7,8,9) without repetition?

Correct Answer: A. (360). Explanation: हजार स्थान पर (7,8,9) में से (3) विकल्प हैं और बाकी \(6\cdot5\cdot4\) तरीके हैं। कुल (360) है। / The thousands place has (3) choices from (7,8,9), and the remaining places have \(6\cdot5\cdot4\) ways. The total is (360).

Which concept should I revise for this Mathematics MCQ?

The thousands place has (3) choices from (7,8,9), and the remaining places have \(6\cdot5\cdot4\) ways. The total is (360).

What exam hint can help solve this Mathematics question?

हजार स्थान पर (7,8,9) में से (3) विकल्प हैं और बाकी \(6\cdot5\cdot4\) तरीके हैं। कुल (360) है।