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Question 8 - MCQs from NCERT Exemplar - Chapter 1 Class 10 Real Numbers

Last updated at Dec. 16, 2024 by Teachoo

If two positive integers a and b are written as  a = x 3 y2 and b = xy 3 ; x, y are prime numbers, then  HCF (a, b) is:

(a)xy                         

(b) xy 2

(c) x 3 y 3                    

(d) x2 y 2

 

Transcript

Question 8 If two positive integers a and b are written as a = x3 y2 and b = xy3; x, y are prime numbers, then HCF (a, b) is: xy (b) xy2 (c) x3 y3 (d) x2 y2 Since a = x3 y2 = x . x . x . y . y b = xy3 = x . y . y . y Thus, HCF = x . y . y = xy2 So, correct answer is (B)
  1. Chapter 1 Class 10 Real Numbers
  2. Serial order wise

    3. MCQs from NCERT Exemplar

    Past Year MCQ (Maths Standard) →
Past Year MCQ (Maths Standard) →
Chapter 1 Class 10 Real Numbers
Serial order wise

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo