HCF and LCM Questions Answers

HCF and LCM Questions Answers (MCQ) listings with explanations includes questions on calcualting HCF and LCM in different types of questions which are important for many competitive exams.

21) What will be the LCM of 8, 24, 36 and

  • 1) 54
  • 2) 108
  • 3) 216
  • 4) 432
View Answer View Explanation
Ans.   C
Explanation :
LCM of 8-24-36-54 will be 2*2*2*3*3*3 = 216

22) Find the HCF of \begin{aligned} \frac{2}{3}, \frac{4}{6}, \frac{8}{27} \end{aligned}

  • 1) \begin{aligned} \frac{2}{27} \end{aligned}
  • 2) \begin{aligned} \frac{8}{3} \end{aligned}
  • 3) \begin{aligned} \frac{2}{3} \end{aligned}
  • 4) \begin{aligned} \frac{8}{27} \end{aligned}
View Answer View Explanation
Ans.   A
Explanation :
Whenever we have to solve this sort of question, remember the formula. HCF = \begin{aligned} \frac{HCF of Numerators}{LCM of Denominators} \end{aligned} So answers will be option 1
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