यदि \(A\cap B=\varnothing\), तो \(|A\cup B|\) के लिए सही सूत्र कौन सा है?
If \(A\cap B=\varnothing\), which formula for \(|A\cup B|\) is correct?
Explanation opens after your attempt
Correct Answer
A. (|A|+|B|)
Concept
Disjoint sets have no repeated common element. Therefore the number of elements in the union is simply (|A|+|B|).
Why this answer is correct
The correct answer is A. (|A|+|B|). Disjoint sets have no repeated common element. Therefore the number of elements in the union is simply (|A|+|B|).
Exam Tip
असंयुक्त सेटों में कोई दोहराया हुआ तत्व नहीं होता। इसलिए संघ की संख्या सीधे (|A|+|B|) होती है।
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