अंकों (2,3,5,6,7,8) से बिना पुनरावृत्ति (4) अंकों की कितनी सम संख्याएं बनेंगी?

How many (4)-digit even numbers can be formed from (2,3,5,6,7,8) without repetition?

Explanation opens after your attempt
Correct Answer

A. (180)

Step 1

Concept

The units place has (3) choices from (2,6,8), and the rest have \(5\cdot4\cdot3\) ways. The total is (180).

Step 2

Why this answer is correct

The correct answer is A. (180). The units place has (3) choices from (2,6,8), and the rest have \(5\cdot4\cdot3\) ways. The total is (180).

Step 3

Exam Tip

इकाई स्थान पर (2,6,8) में से (3) विकल्प हैं और बाकी \(5\cdot4\cdot3\) तरीके हैं। कुल (180) है।

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Mathematics Answer, Explanation and Revision Hints

अंकों (2,3,5,6,7,8) से बिना पुनरावृत्ति (4) अंकों की कितनी सम संख्याएं बनेंगी? / How many (4)-digit even numbers can be formed from (2,3,5,6,7,8) without repetition?

Correct Answer: A. (180). Explanation: इकाई स्थान पर (2,6,8) में से (3) विकल्प हैं और बाकी \(5\cdot4\cdot3\) तरीके हैं। कुल (180) है। / The units place has (3) choices from (2,6,8), and the rest have \(5\cdot4\cdot3\) ways. The total is (180).

Which concept should I revise for this Mathematics MCQ?

The units place has (3) choices from (2,6,8), and the rest have \(5\cdot4\cdot3\) ways. The total is (180).

What exam hint can help solve this Mathematics question?

इकाई स्थान पर (2,6,8) में से (3) विकल्प हैं और बाकी \(5\cdot4\cdot3\) तरीके हैं। कुल (180) है।