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Class 10MathematicsReal NumbersHCF and LCM using prime factorisationExpertLevel 12
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If (p=2^4\times3^2\times5\times7) and (q=2^4\times3^2\times5\times7\times19), which statement about (p) and (q) is correct?

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Answer and explanation

Correct answer: The HCF will be (p)

Step 1: (q=p\times19), so (p) exactly divides (q). Step 2: When one number exactly divides the other, the smaller number is the HCF. Step 3: Identifying a multiple relation saves time.

Related tags

Real-NumbersHcfDivisor-Relation

Frequently asked questions

What is the correct answer to this question?

The HCF will be (p)

Why is this the correct answer?

Step 1: (q=p\times19), so (p) exactly divides (q). Step 2: When one number exactly divides the other, the smaller number is the HCF. Step 3: Identifying a multiple relation saves time.

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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10 more MCQs
  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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