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Prime Factors, HCF and LCM

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Question 43
A=22×3×52 \mathbf{A} = 2^2 \times 3 \times 5^2 A=22×3×52 B=23×32×7 \mathbf{B} = 2^3 \times 3^2 \times 7 B=23×32×7
a.

Write down the highest common factor (HCF) of A and B.

[1]
b.

Find the lowest common multiple (LCM) of A and B.

[2]
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Prime Factors, HCF and LCM Questions

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

58 exam-style questions on AQA GCSE 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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