Which of these numbers is neither Rational nor Integer?
Which of these numbers is neither Rational nor Integer?
निम्नलिखित में से कौन-सी संख्या न तो परिमेय है और न ही पूर्णांक ?
Detailed Solution & Logic
Square root of 2/ 2 का वर्गमूल
Explanation
- Rational numbers are numbers that can be written as $ \frac{p}{q} $ (where $q \neq 0$).
- Integers are whole numbers like -4, 0, 7, etc.
Now check options:
- -4 → Integer and rational ✔️
- 1.5 → $ \frac{3}{2} $, so rational ✔️
- 7 → Integer and rational ✔️
- $ \sqrt{2} $ → Cannot be written as $ \frac{p}{q} $, so irrational ❌
👉 Hence, it is neither rational nor integer.
- परिमेय संख्या (Rational) वह होती है जिसे $ \frac{p}{q} $ के रूप में लिखा जा सके।
- पूर्णांक (Integer) जैसे -4, 0, 7 आदि।
अब विकल्प देखें:
- -4 → पूर्णांक और परिमेय ✔️
- 1.5 → $ \frac{3}{2} $, इसलिए परिमेय ✔️
- 7 → पूर्णांक और परिमेय ✔️
- $ \sqrt{2} $ → $ \frac{p}{q} $ के रूप में नहीं लिख सकते, इसलिए अपरिमेय ❌
👉 इसलिए यह न तो परिमेय है और न ही पूर्णांक।
⭐ Extra Fact / अतिरिक्त तथ्य
- $ \sqrt{2} $ एक irrational number है जिसका दशमलव रूप non-terminating और non-repeating होता है।
- यह संख्या पहली बार पायथागोरस के शिष्यों द्वारा खोजी गई थी।
✔️ Final Answer: Square root of 2 / 2 का वर्गमूल
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