यदि \(U={1,2,\ldots,25}\) और \(A={x:x\) पूर्ण वर्ग है(}), तो (n(A')) कितना है?

If \(U={1,2,\ldots,25}\) and \(A={x:x\) is a perfect square(}), what is (n(A'))?

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), giving (5) elements. Thus (n(A')=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), giving (5) elements. Thus (n(A')=25-5=20).

Step 3

Exam Tip

(1) से (25) तक पूर्ण वर्ग (1,4,9,16,25) हैं, यानी (5) तत्व। इसलिए (n(A')=25-5=20)।

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Mathematics Answer, Explanation and Revision Hints

यदि \(U={1,2,\ldots,25}\) और \(A={x:x\) पूर्ण वर्ग है(}), तो (n(A')) कितना है? / If \(U={1,2,\ldots,25}\) and \(A={x:x\) is a perfect square(}), what is (n(A'))?

Correct Answer: A. (20). Explanation: (1) से (25) तक पूर्ण वर्ग (1,4,9,16,25) हैं, यानी (5) तत्व। इसलिए (n(A')=25-5=20)। / The perfect squares from (1) to (25) are (1,4,9,16,25), giving (5) elements. Thus (n(A')=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), giving (5) elements. Thus (n(A')=25-5=20).

What exam hint can help solve this Mathematics question?

(1) से (25) तक पूर्ण वर्ग (1,4,9,16,25) हैं, यानी (5) तत्व। इसलिए (n(A')=25-5=20)।