📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!

  • google app store apple app store
  • ✖

      Question

      Find the HCF and LCM of 36, 45 and

      60.
      A HCF = 8, LCM = 280 Correct Answer Incorrect Answer
      B HCF = 3, LCM = 180 Correct Answer Incorrect Answer
      C HCF = 2, LCM = 100 Correct Answer Incorrect Answer
      D HCF = 5, LCM = 188 Correct Answer Incorrect Answer

      Solution

      Prime factors: 36 = 2² × 3² 45 = 3² × 5 60 = 2² × 3 × 5 HCF = product of common primes with smallest powers = 3¹ = 3 LCM = product of all primes with highest powers = 2² × 3² × 5 = 4 × 9 × 5 = 180 Answer: HCF = 3, LCM = 180

      Practice Next
      More HCF and LCM Questions