\(यदि (A={x\in \mathbb{N}:x\leq 20\) and x is divisible by \(5}) और (B={5,10,15,20}) है, तो सही कथन क्या है\)?
\(If (A={x\in \mathbb{N}:x\leq 20\) and x is divisible by \(5}) and (B={5,10,15,20}), what is the correct statement\)?
Correct answer and explanation
A. (A=B) और (n(A)=4)(A=B) and (n(A)=4)
Concept
(20) तक (5) से विभाज्य प्राकृतिक संख्याएँ (5,10,15,20) हैं। / Natural numbers up to (20) divisible by (5) are (5,10,15,20).
Why this answer is correct
ये ठीक (B) के अवयव हैं और कुल (4) हैं। / These are exactly the elements of (B), and there are (4) of them.
Exam Tip
सीमा शामिल है क्योंकि \(\leq\) दिया गया है। / The boundary (20) is included because \(\leq\) is given.
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