यदि \(A={x\in \mathbb{Z}:x^2-9<0}\) है, तो (A) में कितने अवयव हैं?
If \(A={x\in \mathbb{Z}:x^2-9<0}\), how many elements are in (A)?
Explanation opens after your attempt
A. (5)
Concept
\(x^2-9<0\) gives \(x^2<9\).
Why this answer is correct
The integer solutions are (-2,-1,0,1,2).
Exam Tip
(-3) and (3) are not included because the inequality is strict. चरण 1: \(x^2-9<0\) से \(x^2<9\) मिलता है। चरण 2: पूर्णांक हल (-2,-1,0,1,2) हैं। चरण 3: (-3) और (3) शामिल नहीं होंगे क्योंकि असमानता कड़ी है।
Login to save your score, XP, coins and progress.
