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Prime Factors, HCF and LCM

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Question 6
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Kenny is thinking of two numbers greater than 10.

Kenny says: "The highest common factor (HCF) of my two numbers is 7. The lowest common multiple (LCM) of my two numbers is 84". Write down the two numbers that Kenny is thinking of.

[3]
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Prime Factors, HCF and LCM Questions

  1. IGCSE
  2. /Maths
  3. /Prime Factors, HCF and LCM

15 exam-style questions on Oxford AQA IGCSE Maths Prime Factors, HCF and LCM. Each one has a worked solution and a mark scheme showing where the marks go.

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