Start learning →

Replace the larger of 48 and 18 by their difference and repeat until both numbers are equal. What is the equal value?

A6
B3
C9
D12
Answer & Solution
Correct answer: A. 6
48 and 18 become 30 and 18, then 12 and 18, then 12 and 6, then 6 and 6, so the final value 6 is the HCF.
Practise this question with Quill — Olympiad (Class 7) →

Keep practising Factors and Multiples

Browse all Factors and Multiples questions for Olympiad (Class 7), or explore more Mathematics topics.

Start a Factors and Multiples lesson →
Related questions