\(समुच्चय (A={x\in \mathbb{N}:x\) is a perfect cube less than 30}) क्या है?
\(What is (A={x\in \mathbb{N}:x\) is a perfect cube less than 30})?
Explanation opens after your attempt
A. ({1,8,27})
Concept
The natural cubes are \(1^3=1\), \(2^3=8\), and \(3^3=27\).
Why this answer is correct
\(4^3=64\), which is greater than (30).
Exam Tip
Stop the list when the next term crosses the bound. चरण 1: प्राकृतिक घन \(1^3=1\), \(2^3=8\), \(3^3=27\) हैं। चरण 2: \(4^3=64\), जो (30) से बड़ा है। चरण 3: सीमा से बाहर का अगला पद देखकर सूची रोकें।
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