यदि \(Y={x:x\in \mathbb{Z}, x^2<4}\) है, तो (Y) में कितने अवयव हैं?
If \(Y={x:x\in \mathbb{Z}, x^2<4}\), how many elements does (Y) have?
Explanation opens after your attempt
A. (3)
Concept
For integers, \(x^2<4\) means (-2<x<2).
Why this answer is correct
The possible integers are (-1,0,1), so there are (3).
Exam Tip
In a strict inequality, (-2) and (2) are not included. चरण 1: \(x^2<4\) का अर्थ पूर्णांकों के लिए (-2<x<2) है। चरण 2: संभव पूर्णांक (-1,0,1) हैं, कुल (3)। चरण 3: सख्त असमानता में (-2) और (2) शामिल नहीं होंगे।
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