यदि \(A=\{1,2\}\) और \(B=\{a,b,c\}\) हैं, तो \(A\times B\) के सभी युग्मों में पहला घटक कितनी बार (1) होगा?

If \(A=\{1,2\}\) and \(B=\{a,b,c\}\), how many times will the first component be (1) in \(A\times B\)?

Explanation opens after your attempt
Correct Answer

A. (3)

Step 1

Concept

The element \(1\in A\) pairs with all (3) elements of (B). So the first component (1) appears (3) times.

Step 2

Why this answer is correct

The correct answer is A. (3). The element \(1\in A\) pairs with all (3) elements of (B). So the first component (1) appears (3) times.

Step 3

Exam Tip

\(1\in A\) के साथ (B) के सभी (3) अवयव जुड़ेंगे। इसलिए पहला घटक (1) कुल (3) बार आएगा।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{1,2\}\) और \(B=\{a,b,c\}\) हैं, तो \(A\times B\) के सभी युग्मों में पहला घटक कितनी बार (1) होगा? / If \(A=\{1,2\}\) and \(B=\{a,b,c\}\), how many times will the first component be (1) in \(A\times B\)?

Correct Answer: A. (3). Explanation: \(1\in A\) के साथ (B) के सभी (3) अवयव जुड़ेंगे। इसलिए पहला घटक (1) कुल (3) बार आएगा। / The element \(1\in A\) pairs with all (3) elements of (B). So the first component (1) appears (3) times.

Which concept should I revise for this Mathematics MCQ?

The element \(1\in A\) pairs with all (3) elements of (B). So the first component (1) appears (3) times.

What exam hint can help solve this Mathematics question?

\(1\in A\) के साथ (B) के सभी (3) अवयव जुड़ेंगे। इसलिए पहला घटक (1) कुल (3) बार आएगा।