समुच्चय \({x \in \mathbb{Z}:x^2<10}\) में कितने तत्व हैं?
How many elements are in the set \({x \in \mathbb{Z}:x^2<10}\)?
Explanation opens after your attempt
C. (7)
Concept
The integers satisfying \(x^2<10\) are (-3,-2,-1,0,1,2,3).
Why this answer is correct
Their squares are less than (10).
Exam Tip
The set is finite and has (7) elements. चरण 1: \(x^2<10\) के लिए पूर्णांक (x=-3,-2,-1,0,1,2,3) मिलते हैं। चरण 2: इनके वर्ग (10) से छोटे हैं। चरण 3: इसलिए यह सांत समुच्चय है और इसमें (7) तत्व हैं।
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