\(यदि (U={x:x\in\mathbb{N},1\le x\le 100}) और (A={x:x\) 10 से विभाज्य है\(}) है, तो (A^c) में कितने तत्व होंगे\)?
\(If (U={x:x\in\mathbb{N},1\le x\le 100}) and (A={x:x\) is divisible by \(10}), how many elements are in (A^c)\)?
Explanation opens after your attempt
A. (90)
Concept
There are (10) multiples of (10) from (1) to (100). Therefore the complement has (100-10=90) elements.
Why this answer is correct
The correct answer is A. (90). There are (10) multiples of (10) from (1) to (100). Therefore the complement has (100-10=90) elements.
Exam Tip
(1) से (100) तक (10) के (10) गुणज हैं। इसलिए पूरक में (100-10=90) तत्व होंगे।
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