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What is the HCF of 81 and 27?

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Question: What is the HCF of 81 and 27?

Options:

  1. 27
  2. 54
  3. 81
  4. 9

Correct Answer: 27

Solution: 

The HCF of 81 and 27 is 27, as it is the largest number that divides both.

What is the HCF of 81 and 27?

Practice Questions

Q1
What is the HCF of 81 and 27?
  1. 27
  2. 54
  3. 81
  4. 9

Questions & Step-by-Step Solutions

What is the HCF of 81 and 27?
Correct Answer: 27
  • Step 1: List the factors of 81. The factors are 1, 3, 9, 27, and 81.
  • Step 2: List the factors of 27. The factors are 1, 3, 9, and 27.
  • Step 3: Identify the common factors from both lists. The common factors are 1, 3, 9, and 27.
  • Step 4: Find the largest common factor. The largest common factor is 27.
  • Step 5: Conclude that the HCF of 81 and 27 is 27.
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