2019 Class 10 Maths Sample Question Paper | Question 7

This 2019 CBSE class 10 Maths sample paper 2 mark question is from real numbers. The question tests a property about LCM and HCF of two numbers and the product of those two numbers.

Question 7A: The HCF and LCM of two numbers are 9 and 360 respectively. If one number is 45, find the other number.

Video Explanation

Explanatory Answer | Class 10 Maths 2019 SQP Q7

Property: Product of the HCF and LCM of two numbers is equal to the product of the two numbers.

Let the other number be b.
HCF × LCM = 45 × b
9 × 360 = 45 × b
b = (\\frac{9 × 360}{45})) = (\\frac{360}{5})) = 72