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Which number is both rational and an integer?कौन सी संख्या परिमेय और पूर्णांक दोनों है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: -12-12
-12 is an integer. It can be written as \(\frac{-12}{1}\), so it is also a rational number. \(\frac{3}{7}\) is rational but not an integer, while \(\sqrt{15}\) and \(\pi\) are irrational. Exam tip: To check whether an integer is rational, write it as a fraction with denominator 1.-12 एक पूर्णांक है। इसे \(\frac{-12}{1}\) के रूप में लिखा जा सकता है, इसलिए यह परिमेय संख्या भी है। \(\frac{3}{7}\) परिमेय है, लेकिन पूर्णांक नहीं है; जबकि \(\sqrt{15}\) और \(\pi\) अपरिमेय हैं। परीक्षा टिप: हर पूर्णांक को हर 1 वाले भिन्न के रूप में लिखकर उसकी परिमेयता जाँचें।
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