Expert Mathematics Chapter 1: Real Numbers Class 10 Level 7

यदि \(N=2^3\times3^2\times5\) है, तो (N) के कुल धनात्मक गुणनखंडों की संख्या क्या होगी?

If \(N=2^3\times3^2\times5\), what is the total number of positive factors of (N)?

Explanation opens after your attempt
Correct Answer

A. (24)

Step 1

Concept

For prime factorisation \(p^a q^b r^c\), total factors are ((a+1)(b+1)(c+1)).

Step 2

Why this answer is correct

Here the powers are (3,2,1), so factors (=(4)(3)(2)=24).

Step 3

Exam Tip

In exams, always add (1) to each exponent before multiplying. चरण 1: किसी संख्या के अभाज्य गुणनखंड \(p^a q^b r^c\) हों, तो कुल गुणनखंड ((a+1)(b+1)(c+1)) होते हैं। चरण 2: यहां घातें (3,2,1) हैं, इसलिए संख्या ((3+1)(2+1)(1+1)=24) होगी। चरण 3: परीक्षा में घातों में (1) जोड़ना न भूलें।

FAQs

Mathematics Question FAQs

What is the correct answer to this Mathematics MCQ?

The correct answer is A. (24).

Where can I practice more Mathematics questions?

Open the subject page or level quiz links on this page to practice more active Mathematics MCQs with answers and explanations.

Related Mathematics Questions

Student Class Required

Select your class first

Quiz questions, daily challenge and practice pages will open according to your selected class. Class 11/12 ke liye stream bhi select karein.