अंकों (0,2,4,6,8) से बिना पुनरावृत्ति कितनी (2)-अंकीय सम संख्याएँ बन सकती हैं?

How many (2)-digit even numbers can be formed from digits (0,2,4,6,8) without repetition?

Explanation opens after your attempt
Correct Answer

B. (16)

Step 1

Concept

If the unit digit is (0), there are (4) ways, and if it is a non-zero even digit, there are \(4\times3=12\) ways, total (16). Make cases for zero questions.

Step 2

Why this answer is correct

The correct answer is B. (16). If the unit digit is (0), there are (4) ways, and if it is a non-zero even digit, there are \(4\times3=12\) ways, total (16). Make cases for zero questions.

Step 3

Exam Tip

इकाई पर (0) हो तो (4) तरीके और इकाई पर गैर-शून्य सम अंक हो तो \(4\times3=12\) तरीके हैं, कुल (16)। शून्य वाले प्रश्न में cases बनाएं।

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Mathematics Answer, Explanation and Revision Hints

अंकों (0,2,4,6,8) से बिना पुनरावृत्ति कितनी (2)-अंकीय सम संख्याएँ बन सकती हैं? / How many (2)-digit even numbers can be formed from digits (0,2,4,6,8) without repetition?

Correct Answer: B. (16). Explanation: इकाई पर (0) हो तो (4) तरीके और इकाई पर गैर-शून्य सम अंक हो तो \(4\times3=12\) तरीके हैं, कुल (16)। शून्य वाले प्रश्न में cases बनाएं। / If the unit digit is (0), there are (4) ways, and if it is a non-zero even digit, there are \(4\times3=12\) ways, total (16). Make cases for zero questions.

Which concept should I revise for this Mathematics MCQ?

If the unit digit is (0), there are (4) ways, and if it is a non-zero even digit, there are \(4\times3=12\) ways, total (16). Make cases for zero questions.

What exam hint can help solve this Mathematics question?

इकाई पर (0) हो तो (4) तरीके और इकाई पर गैर-शून्य सम अंक हो तो \(4\times3=12\) तरीके हैं, कुल (16)। शून्य वाले प्रश्न में cases बनाएं।