Expert Mathematics Chapter 1: Real Numbers Class 10 Level 14

किस विकल्प में \(\sqrt{p}\) अपरिमेय है और (p) अभाज्य भी है?

In which option is \(\sqrt{p}\) irrational and (p) also prime?

Explanation opens after your attempt
Correct Answer

A. (p=11)

Step 1

Concept

(11) is a prime number.

Step 2

Why this answer is correct

A prime number is not a perfect square, so \(\sqrt{11}\) is irrational.

Step 3

Exam Tip

For the square root of a prime, use the non-perfect-square idea directly. चरण 1: (11) अभाज्य संख्या है। चरण 2: कोई अभाज्य संख्या पूर्ण वर्ग नहीं होती, इसलिए \(\sqrt{11}\) अपरिमेय है। चरण 3: अभाज्य संख्या के वर्गमूल पर सीधे अपूर्ण वर्ग का विचार लगाएँ।

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