Class 11 Mathematics Sets Power Set and Universal Set Expert Level 12

\(यदि (U={1,2,3,4,5,6,7,8,9}) और (A={x:x\in U,x\) अभाज्य है}), तो (P(A')) में कितने अवयव होंगे?

\(If (U={1,2,3,4,5,6,7,8,9}) and (A={x:x\in U,x\) is prime}), how many elements are in (P(A'))?

Explanation opens after your attempt
Correct Answer

B. (32)

Step 1

Concept

\(A=\{2,3,5,7\}\), so (A'={1,4,6,8,9}) and (n(P(A'))=25=32). Do not treat (1) as prime.

Step 2

Why this answer is correct

The correct answer is B. (32). \(A=\{2,3,5,7\}\), so (A'={1,4,6,8,9}) and (n(P(A'))=25=32). Do not treat (1) as prime.

Step 3

Exam Tip

\(A=\{2,3,5,7\}\), इसलिए (A'={1,4,6,8,9}) और (n(P(A'))=25=32)। (1) को अभाज्य न मानें।

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Mathematics Answer, Explanation and Revision Hints

\(यदि (U={1,2,3,4,5,6,7,8,9}) और (A={x:x\in U,x\) अभाज्य है}), तो (P(A')) में कितने अवयव होंगे? \(/ If (U={1,2,3,4,5,6,7,8,9}) and (A={x:x\in U,x\) is prime}), how many elements are in (P(A'))?

Correct Answer: B. (32). Explanation: \(A=\{2,3,5,7\}\), इसलिए (A'={1,4,6,8,9}) और (n(P(A'))=25=32)। (1) को अभाज्य न मानें। / \(A=\{2,3,5,7\}\), so (A'={1,4,6,8,9}) and (n(P(A'))=25=32). Do not treat (1) as prime.

Which concept should I revise for this Mathematics MCQ?

\(A=\{2,3,5,7\}\), so (A'={1,4,6,8,9}) and (n(P(A'))=25=32). Do not treat (1) as prime.

What exam hint can help solve this Mathematics question?

\(A=\{2,3,5,7\}\), इसलिए (A'={1,4,6,8,9}) और (n(P(A'))=25=32)। (1) को अभाज्य न मानें।