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Subjects
Class 10MathematicsReal NumbersHCF and LCM using prime factorisationHardLevel 10
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If the HCF of two numbers is (1) and their product is (7429), what is their LCM?

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Answer and explanation

Correct answer: (7429)

Step 1: If the HCF of two numbers is (1), the numbers are co-prime. Step 2: For two numbers, product (=) HCF (\times) LCM, so (7429=1\times) LCM. Hence the LCM is (7429). Step 3: The LCM of co-prime numbers equals their product.

Related tags

Co-PrimeHcf Lcm RelationHard

Frequently asked questions

What is the correct answer to this question?

(7429)

Why is this the correct answer?

Step 1: If the HCF of two numbers is (1), the numbers are co-prime. Step 2: For two numbers, product (=) HCF (\times) LCM, so (7429=1\times) LCM. Hence the LCM is (7429). Step 3: The LCM of co-prime numbers equals their product.

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)?
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