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number-210 MCQ Questions for Class 10

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2 questions tagged with number-210.

Question 1/2 Easy Mathematics Real Numbers Prime factorisation Class 10 Level 8

किस संख्या का अभाज्य गुणनखंडन \(2\times3\times5\times7\) है?

Which number has prime factorisation \(2\times3\times5\times7\)?

Explanation opens after your attempt
Correct Answer

A. 210

Step 1

Concept

All prime factors are given.

Step 2

Why this answer is correct

\(2\times3\times5\times7=210\).

Step 3

Exam Tip

When no power is written, each prime is taken once. चरण 1: सभी अभाज्य गुणनखंड दिए हैं। चरण 2: \(2\times3\times5\times7=210\)। चरण 3: जब घात न हो तो हर अभाज्य एक बार लिया जाता है।

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Question 2/2 Easy Mathematics Real Numbers Prime factorisation Class 10 Level 8

संख्या 210 का सही अभाज्य गुणनखंडन क्या है?

What is the correct prime factorisation of 210?

Explanation opens after your attempt
Correct Answer

A. \(2\times3\times5\times7\)

Step 1

Concept

Write \(210=21\times10\).

Step 2

Why this answer is correct

\(21=3\times7\) and \(10=2\times5\), so \(210=2\times3\times5\times7\).

Step 3

Exam Tip

Do not keep 21 or 10 in the final answer. चरण 1: \(210=21\times10\) लिखें। चरण 2: \(21=3\times7\) और \(10=2\times5\), इसलिए \(210=2\times3\times5\times7\)। चरण 3: अंतिम उत्तर में 21 या 10 न रखें।

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