Hard Mathematics Chapter 1: Real Numbers Class 10 Level 12

(84), (126) और (198) का लघुत्तम समापवर्त्य क्या होगा?

What is the LCM of (84), (126), and (198)?

Explanation opens after your attempt
Correct Answer

B. (2772)

Step 1

Concept

Prime factorise: \(84=2^2\times3\times7\), \(126=2\times3^2\times7\), and \(198=2\times3^2\times11\).

Step 2

Why this answer is correct

The highest powers are \(2^2\), \(3^2\), (7), and (11), so the LCM is (2772).

Step 3

Exam Tip

Include every distinct prime factor. चरण 1: संख्याओं को अभाज्य गुणनखंडों में लिखें: \(84=2^2\times3\times7\), \(126=2\times3^2\times7\), \(198=2\times3^2\times11\)। चरण 2: सबसे बड़ी घातें \(2^2\), \(3^2\), (7), (11) हैं, इसलिए लघुत्तम समापवर्त्य (2772) है। चरण 3: हर अलग अभाज्य गुणनखंड को शामिल करें।

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