यदि \(A={x:x\in\mathbb{N},;x\le 60,;4\mid x}\) और \(B={x:x\in\mathbb{N},;x\le 60,;6\mid x}\), तो \(|A\setminus B|\) कितना है?
If \(A={x:x\in\mathbb{N},;x\le 60,;4\mid x}\) and \(B={x:x\in\mathbb{N},;x\le 60,;6\mid x}\), what is \(|A\setminus B|\)?
Explanation opens after your attempt
Correct Answer
A. (10)
Concept
The set (A) has (15) elements and \(A\cap B\) has (5) elements divisible by (12). So \(|A\setminus B|=15-5=10\).
Why this answer is correct
The correct answer is A. (10). The set (A) has (15) elements and \(A\cap B\) has (5) elements divisible by (12). So \(|A\setminus B|=15-5=10\).
Exam Tip
(A) में (15) तत्व हैं और \(A\cap B\) में (12) से विभाज्य (5) तत्व हैं। इसलिए \(|A\setminus B|=15-5=10\) है।
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