Concept-wise Practice

exam style MCQ Questions for Class 10

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Practice Questions

1 questions tagged with exam style.

किस विकल्प में (990) का सही अभाज्य गुणनखंडन है?

Which option gives the correct prime factorisation of (990)?

Explanation opens after your attempt
Correct Answer

A. \(2\times3^2\times5\times11\)

Step 1

Concept

Write \(990=99\times10\).

Step 2

Why this answer is correct

\(99=3^2\times11\) and \(10=2\times5\), so \(990=2\times3^2\times5\times11\).

Step 3

Exam Tip

Split the number into easy parts for faster factorisation. चरण 1: \(990=99\times10\) लिखा जा सकता है। चरण 2: \(99=3^2\times11\) और \(10=2\times5\), इसलिए \(990=2\times3^2\times5\times11\)। चरण 3: संख्या को आसान भागों में तोड़ना तेज तरीका है।

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