Open In App
Related Articles

QA – Placement Quizzes | Numbers, LCM and HCF | Question 14

Improve
Improve
Improve
Like Article
Like
Save Article
Save
Report issue
Report
Two numbers are in the ratio of 5:7. If their LCM is 105, what is the difference between their squares ? (A) 216 (B) 210 (C) 72 (D) 840

Answer: (A)

Explanation: Let ‘h’ be the HCF of the two numbers. => The numbers are 5h and 7h. We know that Product of Numbers = LCM x HCF => 5h x 7h = 105 x h => h = 3 So, the numbers are 15 and 21. Therefore, difference of their squares = 212 – 152 = 441 – 225 = 216

Quiz of this Question

Last Updated : 28 Jun, 2021
Like Article
Save Article
Previous
Next
Share your thoughts in the comments
Similar Reads