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Class 10MathematicsReal NumbersHCF and LCM using prime factorisationHardLevel 10
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If two numbers have no common prime factor in their prime factorisations, which statement about their HCF is correct?

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Answer and explanation

Correct answer: Their HCF will be (1)

Step 1: HCF contains only common prime factors. Step 2: If there is no common prime factor, the only common divisor is (1). Step 3: Treat such numbers as coprime to solve quickly.

Related tags

Real-NumbersCoprimeHcf

Frequently asked questions

What is the correct answer to this question?

Their HCF will be (1)

Why is this the correct answer?

Step 1: HCF contains only common prime factors. Step 2: If there is no common prime factor, the only common divisor is (1). Step 3: Treat such numbers as coprime to solve quickly.

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Real Numbers. Topic: HCF and LCM using prime factorisation.

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  1. 1If the product of two numbers is 3780 and their LCM is 315, what is their HCF?
  2. 2What is the HCF of (18) and (24) using prime factorisation?
  3. 3What is the LCM of (18) and (24) using prime factorisation?
  4. 4What is the HCF of (40) and (60)?
  5. 5What is the LCM of (40) and (60)?
  6. 6What will be the HCF of (45) and (75)?
  7. 7What will be the LCM of (45) and (75)?
  8. 8Which is the HCF of (32) and (48)?
  9. 9Which is the LCM of (32) and (48)?
  10. 10What is the HCF of (27) and (36)?
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