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Class 9 Mathematics - Number Systems - Proof of irrationality of square root 2 and square root 3 Easy Quiz

Mathematics Number Systems Proof of irrationality of square root 2 and square root 3 Easy Class 9 Level 9

Level 9 • 23/50 questions • 40 seconds per question.

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This level needs 27 more active questions. Admin panel me same class, subject, difficulty aur level_no 9 par question add karein.
Question 1 / 23 0 score
Answered 0/23 Correct 0 Time 15:20
Question 1/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(41^2\) का मान क्या है?

What is the value of \(41^2\)?

Explanation opens after your attempt
Correct Answer

A. 1681

Explanation

Simple Explanation

\(41\times41=1681\)। वर्ग का सही गुणन करें। / \(41\times41=1681\). Multiply correctly to find the square.

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Question 2/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(51^2\) का मान क्या है?

What is the value of \(51^2\)?

Explanation opens after your attempt
Correct Answer

B. 2601

Explanation

Simple Explanation

\(51\times51=2601\)। वर्गों का अभ्यास करें। / \(51\times51=2601\). Practice squares.

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Question 3/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(42^2\) का मान क्या है?

What is the value of \(42^2\)?

Explanation opens after your attempt
Correct Answer

C. 1764

Explanation

Simple Explanation

\(42\times42=1764\)। वर्गों का अभ्यास करें। / \(42\times42=1764\). Practice squares.

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Question 4/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(52^2\) का मान क्या है?

What is the value of \(52^2\)?

Explanation opens after your attempt
Correct Answer

D. 2704

Explanation

Simple Explanation

\(52\times52=2704\)। सही गुणा करें। / \(52\times52=2704\). Multiply correctly.

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Question 5/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(43^2\) का मान क्या है?

What is the value of \(43^2\)?

Explanation opens after your attempt
Correct Answer

A. 1849

Explanation

Simple Explanation

\(43\times43=1849\)। सही गुणा करें। / \(43\times43=1849\). Multiply correctly.

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Question 6/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(53^2\) का मान क्या है?

What is the value of \(53^2\)?

Explanation opens after your attempt
Correct Answer

B. 2809

Explanation

Simple Explanation

\(53\times53=2809\)। वर्ग याद रखें। / \(53\times53=2809\). Remember common squares.

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Question 7/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(44^2\) का मान क्या है?

What is the value of \(44^2\)?

Explanation opens after your attempt
Correct Answer

B. 1936

Explanation

Simple Explanation

\(44^2=(40+4)^2=40^2+2\cdot40\cdot4+4^2=1600+320+16=1936\)। इसलिए सही उत्तर 1936 है। निकटतम भ्रामक विकल्प 1926 और 1946 असल में 10 से कम या अधिक हैं (गलत हैं) और 1956 20 अधिक है। परीक्षा टिप: 2-आंक्यताओं के वर्ग के लिए \((a+b)^2\) सूत्र का उपयोग करके तेज़ी से गणना करें या 1–50 तक के वर्ग याद रखें। / \(44^2=(40+4)^2=40^2+2\cdot40\cdot4+4^2=1600+320+16=1936\). Hence the correct value is 1936. The nearest distractors 1926 and 1946 are off by 10, while 1956 is off by 20, so they are incorrect. Exam tip: use the \((a+b)^2\) expansion for quick mental squaring of two-digit numbers or memorize squares up to 50.

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Question 8/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(54^2\) का मान क्या है?

What is the value of \(54^2\)?

Explanation opens after your attempt
Correct Answer

D. 2916

Explanation

Simple Explanation

\(54\times54=2916\)। वर्ग का अभ्यास करें। / \(54\times54=2916\). Practice squares.

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Question 9/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(45^2\) का मान क्या है?

What is the value of \(45^2\)?

Explanation opens after your attempt
Correct Answer

A. 2025

Explanation

Simple Explanation

\(45\times45=2025\)। वर्ग निकालें। / \(45\times45=2025\). Find the square.

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Question 10/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(55^2\) का मान क्या है?

What is the value of \(55^2\)?

Explanation opens after your attempt
Correct Answer

B. 3025

Explanation

Simple Explanation

\(55\times55=3025\)। वर्ग निकालें। / \(55\times55=3025\). Find the square.

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Question 11/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(46^2\) का मान क्या है?

What is the value of \(46^2\)?

Explanation opens after your attempt
Correct Answer

C. 2116

Explanation

Simple Explanation

462 = 46×46. इसे बाँटकर गुणा करने पर: 40×46 = 1840 और 6×46 = 276, इसलिए 1840+276 = 2116. विकल्प A और B केवल 10 का अंतर दिखाते हैं (2106 और 2126) — वे साधारण अंकगणना में हुई छोटी त्रुटियों के समान हैं। परीक्षा-सुझाव: वर्ग निकालते समय संख्याओं को 40+6 के रूप में विभाजित करके गुणा करें ताकि गलतियाँ कम हों। / 462 = 46×46. Break the multiplication: 40×46 = 1840 and 6×46 = 276, so 1840+276 = 2116. Options A and B differ by ±10 (2106 and 2126) and represent common small arithmetic mistakes. Exam tip: use distributive splitting (e.g., 46=(40+6)) to compute squares mentally and avoid errors.

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Question 12/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(56^2\) का मान क्या है?

What is the value of \(56^2\)?

Explanation opens after your attempt
Correct Answer

D. 3136

Explanation

Simple Explanation

\(56\times56=3136\)। सही गुणा करें। / \(56\times56=3136\). Multiply correctly.

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Question 13/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(47^2\) का मान क्या है?

What is the value of \(47^2\)?

Explanation opens after your attempt
Correct Answer

A. 2209

Explanation

Simple Explanation

\(47\times47=2209\)। वर्ग याद रखें। / \(47\times47=2209\). Remember common squares.

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Question 14/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(57^2\) का मान क्या है?

What is the value of \(57^2\)?

Explanation opens after your attempt
Correct Answer

B. 3249

Explanation

Simple Explanation

\(57\times57=3249\)। वर्ग याद रखें। / \(57\times57=3249\). Remember common squares.

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Question 15/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(58^2\) का मान क्या है?

What is the value of \(58^2\)?

Explanation opens after your attempt
Correct Answer

D. 3364

Explanation

Simple Explanation

\(58\times58=3364\)। वर्ग का अभ्यास करें। / \(58\times58=3364\). Practice squares.

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Question 16/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(48^2\) का मान क्या है?

What is the value of \(48^2\)?

Explanation opens after your attempt
Correct Answer

A. 2304

Explanation

Simple Explanation

\(48\times48=2304\)। वर्ग निकालें। / \(48\times48=2304\). Find the square.

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Question 17/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(59^2\) का मान क्या है?

What is the value of \(59^2\)?

Explanation opens after your attempt
Correct Answer

B. 3481

Explanation

Simple Explanation

\(59\times59=3481\)। सही गुणा करें। / \(59\times59=3481\). Multiply correctly.

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Question 18/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(49^2\) का मान क्या है?

What is the value of \(49^2\)?

Explanation opens after your attempt
Correct Answer

D. 2401

Explanation

Simple Explanation

\(49\times49=2401\)। वर्गों का अभ्यास करें। / \(49\times49=2401\). Practice squares.

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Question 19/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(61^2\) का मान क्या है?

What is the value of \(61^2\)?

Explanation opens after your attempt
Correct Answer

B. 3721

Explanation

Simple Explanation

\(61\times61=3721\)। वर्ग याद रखें। / \(61\times61=3721\). Remember common squares.

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Question 20/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(62^2\) का मान क्या है?

What is the value of \(62^2\)?

Explanation opens after your attempt
Correct Answer

D. 3844

Explanation

Simple Explanation

\(62\times62=3844\)। सही गुणा करें। / \(62\times62=3844\). Multiply correctly.

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Question 21/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(63^2\) का मान क्या है?

What is the value of \(63^2\)?

Explanation opens after your attempt
Correct Answer

B. 3969

Explanation

Simple Explanation

\(63\times63=3969\)। वर्गों का अभ्यास करें। / \(63\times63=3969\). Practice squares.

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Question 22/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(64^2\) का मान क्या है?

What is the value of \(64^2\)?

Explanation opens after your attempt
Correct Answer

D. 4096

Explanation

Simple Explanation

\(64\times64=4096\)। वर्ग निकालें। / \(64\times64=4096\). Find the square.

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Question 23/23 Easy Mathematics Number Systems Exponents Class 9 Level 9

\(65^2\) का मान क्या है?

What is the value of \(65^2\)?

Explanation opens after your attempt
Correct Answer

B. 4225

Explanation

Simple Explanation

\(65\times65=4225\)। वर्ग का अभ्यास करें। / \(65\times65=4225\). Practice squares.

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