कौन-सा विकल्प \(L=\{1,8,27,64,125\}\) को सही ढंग से दर्शाता है?
Which option correctly represents \(L=\{1,8,27,64,125\}\)?
Correct answer and explanation
A. \(L={x:x=n^3,,n\in \mathbb{N},,1\leq n\leq 5}\)
Concept
(1,8,27,64,125) क्रमशः \(1^3,2^3,3^3,4^3,5^3\) हैं। / (1,8,27,64,125) are \(1^3,2^3,3^3,4^3,5^3\).
Why this answer is correct
इसलिए नियम \(x=n^3\) होगा। / Therefore the rule is \(x=n^3\).
Exam Tip
ठीक पाँच अवयव पाने के लिए \(1\leq n\leq 5\) सीमा लगानी होगी। / To get exactly five elements, the bound \(1\leq n\leq 5\) is needed.
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