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6 results found for "not-rational" in Class 10.

Question Hard Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 15

निम्न में से कौन-सा व्यंजक परिमेय नहीं है?

Which of the following expressions is not rational?

Explanation opens after your attempt
Correct Answer

C. \(\sqrt{6}+\sqrt{24}\)

Step 1

Concept

Simplify each option first.

Step 2

Why this answer is correct

\(\sqrt{6}+\sqrt{24}=\sqrt{6}+2\sqrt{6}=3\sqrt{6}\), which is irrational.

Step 3

Exam Tip

Radicals may cancel in multiplication, but not always in addition. चरण 1: पहले प्रत्येक विकल्प को सरल करें। चरण 2: \(\sqrt{6}+\sqrt{24}=\sqrt{6}+2\sqrt{6}=3\sqrt{6}\), जो अपरिमेय है। चरण 3: गुणन में मूल कट सकते हैं, पर योग में हमेशा ऐसा नहीं होता।

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Question Medium Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 15

निम्नलिखित में से कौन-सा परिणाम परिमेय नहीं है?

Which of the following results is not rational?

Explanation opens after your attempt
Correct Answer

C. \(\sqrt{2}+\sqrt{98}\)

Step 1

Concept

\(\sqrt{98}=7\sqrt{2}\), so \(\sqrt{2}+\sqrt{98}=8\sqrt{2}\).

Step 2

Why this answer is correct

\(8\sqrt{2}\) is irrational, so it is not rational.

Step 3

Exam Tip

Simplify each option before deciding its nature. चरण 1: \(\sqrt{98}=7\sqrt{2}\), इसलिए \(\sqrt{2}+\sqrt{98}=8\sqrt{2}\)। चरण 2: \(8\sqrt{2}\) अपरिमेय है, इसलिए परिमेय नहीं है। चरण 3: हर विकल्प को सरल करने के बाद ही प्रकृति तय करें।

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Question Medium Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 15

निम्नलिखित में से कौन-सी संख्या परिमेय नहीं है?

Which of the following numbers is not rational?

Explanation opens after your attempt
Correct Answer

D. \(\sqrt{63}\)

Step 1

Concept

Terminating decimals, fractions, and recurring decimals are rational.

Step 2

Why this answer is correct

\(\sqrt{63}=3\sqrt{7}\), and \(\sqrt{7}\) is irrational.

Step 3

Exam Tip

Simplifying the square-root option is a good way to check it. चरण 1: समाप्त दशमलव, भिन्न और आवर्ती दशमलव परिमेय होते हैं। चरण 2: \(\sqrt{63}=3\sqrt{7}\), और \(\sqrt{7}\) अपरिमेय है। चरण 3: वर्गमूल वाले विकल्प को सरल करके जांचना अच्छा तरीका है।

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Question Medium Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 14

निम्नलिखित में से कौन-सा परिणाम परिमेय नहीं है?

Which of the following results is not rational?

Explanation opens after your attempt
Correct Answer

C. \(\sqrt{3}+\sqrt{75}\)

Step 1

Concept

\(\sqrt{75}=5\sqrt{3}\), so \(\sqrt{3}+\sqrt{75}=6\sqrt{3}\).

Step 2

Why this answer is correct

\(6\sqrt{3}\) is irrational, so it is not rational.

Step 3

Exam Tip

Simplify each option before deciding its nature. चरण 1: \(\sqrt{75}=5\sqrt{3}\), इसलिए \(\sqrt{3}+\sqrt{75}=6\sqrt{3}\)। चरण 2: \(6\sqrt{3}\) अपरिमेय है, इसलिए परिमेय नहीं है। चरण 3: हर विकल्प को सरल करने के बाद ही प्रकृति तय करें।

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Question Medium Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 14

निम्नलिखित में से कौन-सी संख्या परिमेय नहीं है?

Which of the following numbers is not rational?

Explanation opens after your attempt
Correct Answer

C. \(\sqrt{45}\)

Step 1

Concept

Terminating decimals, fractions, and recurring decimals are rational.

Step 2

Why this answer is correct

\(\sqrt{45}=3\sqrt{5}\), and \(\sqrt{5}\) is irrational.

Step 3

Exam Tip

Simplify the square root to identify its nature. चरण 1: समाप्त दशमलव, भिन्न और आवर्ती दशमलव परिमेय होते हैं। चरण 2: \(\sqrt{45}=3\sqrt{5}\), और \(\sqrt{5}\) अपरिमेय है। चरण 3: वर्गमूल को सरल करके उसकी प्रकृति पहचानें।

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Question Medium Mathematics Chapter 1: Real Numbers 5: Irrational numbers Class 10 Level 13

निम्नलिखित में से कौन-सा परिणाम परिमेय नहीं है?

Which of the following results is not rational?

Explanation opens after your attempt
Correct Answer

C. \(\sqrt{2}+\sqrt{18}\)

Step 1

Concept

\(\sqrt{2}+\sqrt{18}=\sqrt{2}+3\sqrt{2}=4\sqrt{2}\).

Step 2

Why this answer is correct

\(4\sqrt{2}\) is irrational, so it is not rational.

Step 3

Exam Tip

In options, simplify every result before deciding its nature. चरण 1: \(\sqrt{2}+\sqrt{18}=\sqrt{2}+3\sqrt{2}=4\sqrt{2}\)। चरण 2: \(4\sqrt{2}\) अपरिमेय है, इसलिए परिमेय नहीं है। चरण 3: विकल्पों में पहले सभी परिणाम सरल करें, फिर प्रकृति तय करें।

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