समुच्चय \(B=\{2,5,10,17,26\}\) को सबसे सही समुच्चय-निर्माण रूप में कैसे लिखा जाएगा?
How can the set \(B=\{2,5,10,17,26\}\) be written most accurately in set-builder form?
Correct answer and explanation
A. \(B={x:x=n^2+1,,n\in \mathbb{N},,1\leq n\leq 5}\)
Concept
दिए गए अवयव \(1^2+1,2^2+1,3^2+1,4^2+1,5^2+1\) के रूप में मिलते हैं। / The elements are obtained as \(1^2+1,2^2+1,3^2+1,4^2+1,5^2+1\).
Why this answer is correct
इसलिए नियम \(x=n^2+1\) होगा। / So the rule is \(x=n^2+1\).
Exam Tip
ठीक पाँच अवयव पाने के लिए \(1\leq n\leq 5\) सीमा लिखना जरूरी है। / To get exactly five elements, the bound \(1\leq n\leq 5\) is necessary.
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