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Subjects
Class 10MathematicsReal NumbersFundamental Theorem of ArithmeticEasyLevel 5
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If (30=2\times3\times5) and (42=2\times3\times7), what is the LCM of 30 and 42?

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Answer and explanation

Correct answer: 210

Step 1: For LCM, take all required prime factors. Step 2: (2\times3\times5\times7=210). Step 3: LCM includes all necessary prime factors from both numbers.

Related tags

LcmPrime-FactorisationEasy

Frequently asked questions

What is the correct answer to this question?

210

Why is this the correct answer?

Step 1: For LCM, take all required prime factors. Step 2: (2\times3\times5\times7=210). Step 3: LCM includes all necessary prime factors from both numbers.

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Real Numbers. Topic: Fundamental Theorem of Arithmetic.

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  1. 1According to the Fundamental Theorem of Arithmetic, every composite number can be written in which form?
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  4. 4What does uniqueness mean in the Fundamental Theorem of Arithmetic?
  5. 5In the prime factorisation of 84, what is the power of 2?
  6. 6The number (2^3\times3^2) is equal to which number?
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