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number-2205 MCQ Questions for Class 10

number-2205 se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

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3 questions tagged with number-2205.

Question 1/3 Medium Mathematics Real Numbers Prime factorisation Class 10 Level 9

यदि किसी संख्या का अभाज्य गुणनखंडन \(3^2\times5\times7^2\) है, तो वह संख्या कौन सी है?

If the prime factorisation of a number is \(3^2\times5\times7^2\), which number is it?

Explanation opens after your attempt
Correct Answer

A. 2205

Step 1

Concept

Calculate \(3^2=9\) and \(7^2=49\).

Step 2

Why this answer is correct

\(9\times5\times49=2205\).

Step 3

Exam Tip

Simplify the two powers first and multiply. चरण 1: \(3^2=9\) और \(7^2=49\) निकालें। चरण 2: \(9\times5\times49=2205\)। चरण 3: दो घातों को पहले सरल करके गुणा करें।

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Question 2/3 Medium Mathematics Real Numbers Prime factorisation Class 10 Level 9

यदि \(2205=3^b\times5\times7^2\), तो (b) का मान क्या है?

If \(2205=3^b\times5\times7^2\), what is the value of (b)?

Explanation opens after your attempt
Correct Answer

A. 2

Step 1

Concept

\(2205=45\times49\).

Step 2

Why this answer is correct

\(45=3^2\times5\) and \(49=7^2\), so \(2205=3^2\times5\times7^2\).

Step 3

Exam Tip

Comparing gives (b=2). चरण 1: \(2205=45\times49\) है। चरण 2: \(45=3^2\times5\) और \(49=7^2\), इसलिए \(2205=3^2\times5\times7^2\)। चरण 3: तुलना करने पर (b=2) है।

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Question 3/3 Medium Mathematics Real Numbers Prime factorisation Class 10 Level 9

संख्या 2205 का सही अभाज्य गुणनखंडन क्या है?

What is the correct prime factorisation of 2205?

Explanation opens after your attempt
Correct Answer

A. \(3^2\times5\times7^2\)

Step 1

Concept

Write \(2205=45\times49\).

Step 2

Why this answer is correct

\(45=3^2\times5\) and \(49=7^2\), so \(2205=3^2\times5\times7^2\).

Step 3

Exam Tip

Give complete prime form to 45 and 49. चरण 1: \(2205=45\times49\) लिखें। चरण 2: \(45=3^2\times5\) और \(49=7^2\), इसलिए \(2205=3^2\times5\times7^2\)। चरण 3: 45 और 49 को पूरा अभाज्य रूप दें।

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