\(यदि (A={x:x\in \mathbb{N}, x\le 15}) और (B={x:x\in \mathbb{N}, x\) विषम है\(, x\le 15}) है, तो (A-B) क्या है\)?
\(If (A={x:x\in \mathbb{N}, x\le 15}) and (B={x:x\in \mathbb{N}, x\) is odd\(, x\le 15}), what is (A-B)\)?
Explanation opens after your attempt
Correct Answer
B. ( {2,4,6,8,10,12,14} )
Concept
(A-B) keeps elements of (A) that are not in (B). So the even numbers up to (15) are the answer.
Why this answer is correct
The correct answer is B. ( {2,4,6,8,10,12,14} ). (A-B) keeps elements of (A) that are not in (B). So the even numbers up to (15) are the answer.
Exam Tip
(A-B) में (A) के वे अवयव रहेंगे जो (B) में नहीं हैं। इसलिए (15) तक की सम संख्याएं उत्तर हैं।
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