• Prime
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  • we know that 240 = 2 × 2 × 2 × 3 × 5 and 315 = 3 × 3 × 5 × 7. Use the prime factors to find the HCF of 240 and 315.
    15
  • What are the values of A and B in this factor tree?
    A=120 B=10
  • 2100 = 2 × 2 × 3 × 5 × 5 × 7 and 1500 = 2 × 2 × 3 × 5 × 5 × 5. Use the prime factors of 2100 to find the HCF of 2100 and 1500.
    300
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