Easy Mathematics Real Numbers Class 10 Level 11

तीन संकेतक (8), (12) और (16) सेकंड के अंतराल पर जलते हैं। वे फिर कितने सेकंड बाद साथ जलेंगे?

Three indicators glow at intervals of (8), (12), and (16) seconds. After how many seconds will they glow together again?

Explanation opens after your attempt
Correct Answer

C. (48)

Step 1

Concept

The next common glowing time is the LCM of (8), (12), and (16).

Step 2

Why this answer is correct

\(8=2^3\), \(12=2^2\times3\), and \(16=2^4\).

Step 3

Exam Tip

\(2^4\times3=48\), so the answer is (48) seconds. चरण 1: साथ जलने का अगला समय (8), (12) और (16) का लघुत्तम समापवर्त्य होगा। चरण 2: \(8=2^3\), \(12=2^2\times3\), \(16=2^4\)। चरण 3: \(2^4\times3=48\), इसलिए उत्तर (48) सेकंड है।

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तीन संकेतक (8), (12) और (16) सेकंड के अंतराल पर जलते हैं। वे फिर कितने सेकंड बाद साथ जलेंगे? / Three indicators glow at intervals of (8), (12), and (16) seconds. After how many seconds will they glow together again?

Correct Answer: C. (48). Explanation: चरण 1: साथ जलने का अगला समय (8), (12) और (16) का लघुत्तम समापवर्त्य होगा। चरण 2: \(8=2^3\), \(12=2^2\times3\), \(16=2^4\)। चरण 3: \(2^4\times3=48\), इसलिए उत्तर (48) सेकंड है। / Step 1: The next common glowing time is the LCM of (8), (12), and (16). Step 2: \(8=2^3\), \(12=2^2\times3\), and \(16=2^4\). Step 3: \(2^4\times3=48\), so the answer is (48) seconds.

Which concept should I revise for this Mathematics MCQ?

The next common glowing time is the LCM of (8), (12), and (16).

What exam hint can help solve this Mathematics question?

\(2^4\times3=48\), so the answer is (48) seconds. चरण 1: साथ जलने का अगला समय (8), (12) और (16) का लघुत्तम समापवर्त्य होगा। चरण 2: \(8=2^3\), \(12=2^2\times3\), \(16=2^4\)। चरण 3: \(2^4\times3=48\), इसलिए उत्तर (48) सेकंड है।

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