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number-980 MCQ Questions for Class 10

number-980 se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

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2 questions tagged with number-980.

Question 1/2 Medium Mathematics Real Numbers Prime factorisation Class 10 Level 7

किस संख्या का अभाज्य गुणनखंडन \(2^2\times5\times7^2\) है?

Which number has prime factorisation \(2^2\times5\times7^2\)?

Explanation opens after your attempt
Correct Answer

A. 980

Step 1

Concept

Calculate \(2^2=4\) and \(7^2=49\).

Step 2

Why this answer is correct

\(4\times5\times49=980\).

Step 3

Exam Tip

Finding powers first reduces mistakes. चरण 1: \(2^2=4\) और \(7^2=49\) निकालें। चरण 2: \(4\times5\times49=980\)। चरण 3: घातों का मान पहले निकालने से गलती कम होती है।

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Question 2/2 Medium Mathematics Real Numbers Prime factorisation Class 10 Level 7

संख्या 980 का सही अभाज्य गुणनखंडन क्या है?

What is the correct prime factorisation of 980?

Explanation opens after your attempt
Correct Answer

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

Step 1

Concept

Write \(980=98\times10\).

Step 2

Why this answer is correct

\(98=2\times7^2\) and \(10=2\times5\), so \(980=2^2\times5\times7^2\).

Step 3

Exam Tip

Count the total power of 2 correctly. चरण 1: \(980=98\times10\) लिखें। चरण 2: \(98=2\times7^2\) और \(10=2\times5\), इसलिए \(980=2^2\times5\times7^2\)। चरण 3: 2 की कुल घात सही गिनें।

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