\(यदि (U={1,2,3,\ldots,25}) और (A={x:x\) पूर्ण वर्ग है\(}) है, तो (A^c) में कितने तत्व होंगे\)?

\(If (U={1,2,3,\ldots,25}) and (A={x:x\) is a perfect square\(}), how many elements are in (A^c)\)?

Explanation opens after your attempt
Correct Answer

A. (20)

Step 1

Concept

The perfect squares from (1) to (25) are (1,4,9,16,25). Hence (n\(A^c\)=25-5=20).

Step 2

Why this answer is correct

The correct answer is A. (20). The perfect squares from (1) to (25) are (1,4,9,16,25). Hence (n\(A^c\)=25-5=20).

Step 3

Exam Tip

(1) से (25) तक पूर्ण वर्ग (1,4,9,16,25) हैं। इसलिए (n\(A^c\)=25-5=20) होगा।

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Mathematics Answer, Explanation and Revision Hints

\(यदि (U={1,2,3,\ldots,25}) और (A={x:x\) पूर्ण वर्ग है}) है, तो \(A^c\) में कितने तत्व होंगे? \(/ If (U={1,2,3,\ldots,25}) and (A={x:x\) is a perfect square\(}), how many elements are in (A^c)\)?

Correct Answer: A. (20). Explanation: (1) से (25) तक पूर्ण वर्ग (1,4,9,16,25) हैं। इसलिए (n\(A^c\)=25-5=20) होगा। / The perfect squares from (1) to (25) are (1,4,9,16,25). Hence (n\(A^c\)=25-5=20).

Which concept should I revise for this Mathematics MCQ?

The perfect squares from (1) to (25) are (1,4,9,16,25). Hence (n\(A^c\)=25-5=20).

What exam hint can help solve this Mathematics question?

(1) से (25) तक पूर्ण वर्ग (1,4,9,16,25) हैं। इसलिए (n\(A^c\)=25-5=20) होगा।