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

Last updated at August 12, 2026 by

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

 

If a = x3 y2 and b = xy3; x, y are prime numbers, then HCF (a, b) is: - MCQs from NCERT Exemplar

Take a fresh quiz. Then take another.
Every attempt is a new AI-adaptive Teachoo quiz with 3 questions, selected from your answers, mistakes, and progress.
Remove Ads
Teachoo · Class 10 Explore Class 10

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)

Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh is an IIT Kanpur graduate and has been teaching for 16+ years. At Teachoo, he breaks down Maths, Science and Computer Science into simple steps so students understand concepts deeply and score with confidence.

Many students prefer Teachoo Black for a smooth, ad-free learning experience.