यदि \(x\in\mathbb{Z}\) और \(-2\leq \frac{x-1}{3}<3\) है तो पूर्णांक हलों की संख्या कितनी है?
If \(x\in\mathbb{Z}\) and \(-2\leq \frac{x-1}{3}<3\), how many integer solutions are there?
Explanation opens after your attempt
B. (15)
Concept
Multiplying by (3) gives \(-6\leq x-1<9\), so \(-5\leq x<10\). The integers from (-5) to (9) are (15) in total.
Why this answer is correct
The correct answer is B. (15). Multiplying by (3) gives \(-6\leq x-1<9\), so \(-5\leq x<10\). The integers from (-5) to (9) are (15) in total.
Exam Tip
(3) से गुणा करने पर \(-6\leq x-1<9\), इसलिए \(-5\leq x<10\) मिलता है। पूर्णांक (-5) से (9) तक हैं, कुल (15)।
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