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The HCF of two numbers is 7 and their LCM is 84. If one of the numbers is 21, what is the other number? (2023)

Practice Questions

1 question
Q1
The HCF of two numbers is 7 and their LCM is 84. If one of the numbers is 21, what is the other number? (2023)
  1. 28
  2. 42
  3. 49
  4. 56

Questions & Step-by-step Solutions

1 item
Q
Q: The HCF of two numbers is 7 and their LCM is 84. If one of the numbers is 21, what is the other number? (2023)
Solution: Using the relation HCF * LCM = Product of the numbers, we have 7 * 84 = 21 * x, which gives x = 42.
Steps: 0

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