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