\(यदि (U={x:x\) एक अंक है\(}) और (A={x:x\) अभाज्य अंक है\(}), तो (n(A^c)) कितना होगा\)?

\(If (U={x:x\) is a digit\(}) and (A={x:x\) is a prime digit\(}), what is (n(A^c))\)?

Explanation opens after your attempt
Correct Answer

A. (6)

Step 1

Concept

The prime digits are (2,3,5,7). There are (10) digits in all, so the complement has (10-4=6) digits.

Step 2

Why this answer is correct

The correct answer is A. (6). The prime digits are (2,3,5,7). There are (10) digits in all, so the complement has (10-4=6) digits.

Step 3

Exam Tip

अंकों में अभाज्य अंक (2,3,5,7) हैं। कुल (10) अंक हैं, इसलिए पूरक में (10-4=6) अंक होंगे।

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Mathematics Answer, Explanation and Revision Hints

\(यदि (U={x:x\) एक अंक है\(}) और (A={x:x\) अभाज्य अंक है}), तो (n\(A^c\)) कितना होगा? \(/ If (U={x:x\) is a digit\(}) and (A={x:x\) is a prime digit\(}), what is (n(A^c))\)?

Correct Answer: A. (6). Explanation: अंकों में अभाज्य अंक (2,3,5,7) हैं। कुल (10) अंक हैं, इसलिए पूरक में (10-4=6) अंक होंगे। / The prime digits are (2,3,5,7). There are (10) digits in all, so the complement has (10-4=6) digits.

Which concept should I revise for this Mathematics MCQ?

The prime digits are (2,3,5,7). There are (10) digits in all, so the complement has (10-4=6) digits.

What exam hint can help solve this Mathematics question?

अंकों में अभाज्य अंक (2,3,5,7) हैं। कुल (10) अंक हैं, इसलिए पूरक में (10-4=6) अंक होंगे।