1.

Find the HCF of 30, 72 and 432 using prime factorisation, and hence, find the LCM o (30, 72, 432) and 20​

Answer»
  • Answer
  • 30 =2×3×5
  • 72 =2×2×2×3×3
  • 432 =2×2×2×2×3×3×3
  • HCF=6
  • 30 = 2×3×5
  • 72 = 2×2×2×3×3
  • 432 = 2×2×2×2×3×3×3
  • 20 = 2×2×5
  • LCM = 10800



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