यदि (|A|=8) है, तो (\mathcal{P}(A)) में even cardinality वाले subsets कितने होंगे?
If (|A|=8), how many subsets in (\mathcal{P}(A)) have even cardinality?
Explanation opens after your attempt
Correct Answer
B. (128)
Concept
The number of even cardinality subsets is \(2^{8-1}=128\). In exams, remember that for \(n\geq1\), even and odd subsets are equal.
Why this answer is correct
The correct answer is B. (128). The number of even cardinality subsets is \(2^{8-1}=128\). In exams, remember that for \(n\geq1\), even and odd subsets are equal.
Exam Tip
Even cardinality subsets की संख्या \(2^{8-1}=128\) है। परीक्षा में \(n\geq1\) होने पर even और odd subsets बराबर याद रखें।
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