alleryStart learning →Start with 45 and 30. Replace the larger by the difference until both are equal. What is that value?
A5
B10
C15
D30
Answer & Solution
Correct answer: C. 15
45 and 30 become 15 and 30, then 15 and 15, so the repeated difference method ends at 15, the HCF of 45 and 30.
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