Concept-wise Practice

complement counting MCQ Questions for Class 12

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Practice Questions

1 questions tagged with complement counting.

समुच्चय \(A=\{1,2,3,4,5,6\}\) पर (R) के वर्ग ({1,2,3},{4,5},{6}) हैं। (R) में कुल कितने युग्म नहीं होंगे?

On \(A=\{1,2,3,4,5,6\}\), relation (R) has classes ({1,2,3},{4,5},{6}). How many ordered pairs are not in (R)?

Explanation opens after your attempt
Correct Answer

A. (22)

Step 1

Concept

\(A\times A\) has \(6^2=36\) ordered pairs.

Step 2

Why this answer is correct

(R) contains \(3^2+2^2+1^2=14\) pairs.

Step 3

Exam Tip

Therefore (36-14=22) pairs are not in (R). चरण 1: \(A\times A\) में कुल \(6^2=36\) युग्म हैं। चरण 2: (R) में \(3^2+2^2+1^2=14\) युग्म होंगे। चरण 3: इसलिए (36-14=22) युग्म (R) में नहीं होंगे।

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