\(यदि (U={x:x \in \mathbb{N}, x \le 25}), (A={x:x \in U\) तथा x वर्ग संख्या है}), तो (A') में कितने सदस्य हैं?
\(If (U={x:x \in \mathbb{N}, x \le 25}), (A={x:x \in U\) and x is a square number}), how many elements are in (A')?
Explanation opens after your attempt
Correct Answer
A. (20)
Concept
The square numbers up to (25) are (1,4,9,16,25), so (n(A)=5). The complement has (25-5=20) elements.
Why this answer is correct
The correct answer is A. (20). The square numbers up to (25) are (1,4,9,16,25), so (n(A)=5). The complement has (25-5=20) elements.
Exam Tip
(25) तक वर्ग संख्याएं (1,4,9,16,25) हैं, इसलिए (n(A)=5) है। पूरक में (25-5=20) सदस्य होंगे।
Login to save your score, XP, coins and progress.