निम्नांकित में कौन विजातीय है? 

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Bihar STET TGT (Maths) Official Paper-I (Held On: 04 Sept, 2023 Shift 2)
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  1. \(\frac{3}{5}\)
  2. \(\sqrt{\frac{16}{4}}\)
  3. \(\frac{\sqrt2}{5}\)
  4. \(\frac{25}{9}\)

Answer (Detailed Solution Below)

Option 3 : \(\frac{\sqrt2}{5}\)
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स्पष्टीकरण -

विकल्प (i) के लिए -

 \(\frac{3}{5}\) एक परिमेय संख्या है। 

विकल्प (ii) के लिए -

\(\sqrt{\frac{16}{4}} = \sqrt4 = 2\) एक परिमेय संख्या है। 

विकल्प (iii) के लिए -

\(\frac{\sqrt2}{5}\)एक परिमेय संख्या नहीं है। 

विकल्प (iv) के लिए -

\(\frac{25}{9}\)  एक परिमेय संख्या है। 

अतः विकल्प (3) सही है।

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