यदि \(A=\{1,2\}\) और \(B=\{a,b,c\}\) हों, तो \(A\times B\) के कितने उपसमुच्चय (A) से (B) में फलन नहीं हैं?

If \(A=\{1,2\}\) and \(B=\{a,b,c\}\), how many subsets of \(A\times B\) are not functions from (A) to (B)?

Explanation opens after your attempt
Correct Answer

C. (55)

Step 1

Concept

There are \(2^6=64\) total subsets and \(3^2=9\) functions. Thus non-function subsets are (64-9=55).

Step 2

Why this answer is correct

The correct answer is C. (55). There are \(2^6=64\) total subsets and \(3^2=9\) functions. Thus non-function subsets are (64-9=55).

Step 3

Exam Tip

कुल उपसमुच्चय \(2^6=64\) हैं और फलन \(3^2=9\) हैं। अतः फलन न होने वाले उपसमुच्चय (64-9=55) हैं।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{1,2\}\) और \(B=\{a,b,c\}\) हों, तो \(A\times B\) के कितने उपसमुच्चय (A) से (B) में फलन नहीं हैं? / If \(A=\{1,2\}\) and \(B=\{a,b,c\}\), how many subsets of \(A\times B\) are not functions from (A) to (B)?

Correct Answer: C. (55). Explanation: कुल उपसमुच्चय \(2^6=64\) हैं और फलन \(3^2=9\) हैं। अतः फलन न होने वाले उपसमुच्चय (64-9=55) हैं। / There are \(2^6=64\) total subsets and \(3^2=9\) functions. Thus non-function subsets are (64-9=55).

Which concept should I revise for this Mathematics MCQ?

There are \(2^6=64\) total subsets and \(3^2=9\) functions. Thus non-function subsets are (64-9=55).

What exam hint can help solve this Mathematics question?

कुल उपसमुच्चय \(2^6=64\) हैं और फलन \(3^2=9\) हैं। अतः फलन न होने वाले उपसमुच्चय (64-9=55) हैं।