समुच्चय \(X={x:x=3n-1,,n\in \mathbb{N},,1\leq n\leq5}\) का सूची रूप कौन-सा है?
Which is the roster form of \(X={x:x=3n-1,,n\in \mathbb{N},,1\leq n\leq5}\)?
Explanation opens after your attempt
A. \(X=\{2,5,8,11,14\}\)
Concept
(n=1,2,3,4,5) रखें। / Put (n=1,2,3,4,5).
Why this answer is correct
(3n-1) से (2,5,8,11,14) मिलते हैं। / (3n-1) gives (2,5,8,11,14).
Exam Tip
सूत्र में (n) की हर कीमत अलग से रखकर सूची बनाएं। / Substitute each allowed value of (n) carefully to form the roster.
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