Hard Mathematics Chapter 1: Real Numbers Class 10 Level 13

यदि दो संख्याओं का महत्तम समापवर्तक (18) और लघुत्तम समापवर्त्य (990) है, और वे (18r) तथा (18s) हैं, तो (rs) का मान क्या होगा?

If the HCF of two numbers is (18) and their LCM is (990), and the numbers are (18r) and (18s), what is the value of (rs)?

Explanation opens after your attempt
Correct Answer

C. (55)

Step 1

Concept

After taking out HCF (18), (r) and (s) are coprime.

Step 2

Why this answer is correct

LCM (=18rs=990), so (rs=55).

Step 3

Exam Tip

Divide by the HCF to simplify such questions. चरण 1: महत्तम समापवर्तक (18) बाहर निकालने पर (r) और (s) सहाभाज्य होते हैं। चरण 2: लघुत्तम समापवर्त्य (18rs=990), इसलिए (rs=55) है। चरण 3: ऐसे प्रश्नों में महत्तम समापवर्तक से भाग देकर काम आसान करें।

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