यदि \(A=\{a,b,c,d\}\) है तो कितने उपसमुच्चयों में (a) नहीं होगा?

If \(A=\{a,b,c,d\}\) then how many subsets will not contain (a)?

Explanation opens after your attempt
Correct Answer

B. (8)

Step 1

Concept

After excluding (a), subsets are formed from (b,c,d). So the number is \(2^3=8\).

Step 2

Why this answer is correct

The correct answer is B. (8). After excluding (a), subsets are formed from (b,c,d). So the number is \(2^3=8\).

Step 3

Exam Tip

(a) को हटाने के बाद (b,c,d) से उपसमुच्चय बनेंगे। अतः संख्या \(2^3=8\) है।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{a,b,c,d\}\) है तो कितने उपसमुच्चयों में (a) नहीं होगा? / If \(A=\{a,b,c,d\}\) then how many subsets will not contain (a)?

Correct Answer: B. (8). Explanation: (a) को हटाने के बाद (b,c,d) से उपसमुच्चय बनेंगे। अतः संख्या \(2^3=8\) है। / After excluding (a), subsets are formed from (b,c,d). So the number is \(2^3=8\).

Which concept should I revise for this Mathematics MCQ?

After excluding (a), subsets are formed from (b,c,d). So the number is \(2^3=8\).

What exam hint can help solve this Mathematics question?

(a) को हटाने के बाद (b,c,d) से उपसमुच्चय बनेंगे। अतः संख्या \(2^3=8\) है।