अंकों (2,4,5,6,8,9) से बिना पुनरावृत्ति (4) अंकों की कितनी संख्याएं (6000) से बड़ी होंगी?

How many (4)-digit numbers greater than (6000) can be formed from (2,4,5,6,8,9) without repetition?

Explanation opens after your attempt
Correct Answer

D. (60)

Step 1

Concept

The thousands place can be (6,8,9), and the remaining places have \(5\cdot4\cdot3\) ways. The total is \(3\cdot5\cdot4\cdot3=180\).

Step 2

Why this answer is correct

The correct answer is D. (60). The thousands place can be (6,8,9), and the remaining places have \(5\cdot4\cdot3\) ways. The total is \(3\cdot5\cdot4\cdot3=180\).

Step 3

Exam Tip

हजार के स्थान पर (6,8,9) हो सकते हैं और बाकी \(5\cdot4\cdot3\) तरीके हैं। कुल \(3\cdot5\cdot4\cdot3=180\) है।

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Mathematics Answer, Explanation and Revision Hints

अंकों (2,4,5,6,8,9) से बिना पुनरावृत्ति (4) अंकों की कितनी संख्याएं (6000) से बड़ी होंगी? / How many (4)-digit numbers greater than (6000) can be formed from (2,4,5,6,8,9) without repetition?

Correct Answer: D. (60). Explanation: हजार के स्थान पर (6,8,9) हो सकते हैं और बाकी \(5\cdot4\cdot3\) तरीके हैं। कुल \(3\cdot5\cdot4\cdot3=180\) है। / The thousands place can be (6,8,9), and the remaining places have \(5\cdot4\cdot3\) ways. The total is \(3\cdot5\cdot4\cdot3=180\).

Which concept should I revise for this Mathematics MCQ?

The thousands place can be (6,8,9), and the remaining places have \(5\cdot4\cdot3\) ways. The total is \(3\cdot5\cdot4\cdot3=180\).

What exam hint can help solve this Mathematics question?

हजार के स्थान पर (6,8,9) हो सकते हैं और बाकी \(5\cdot4\cdot3\) तरीके हैं। कुल \(3\cdot5\cdot4\cdot3=180\) है।