Number Theory
HCF and LCM by Inspection
Interactive practice questions
Write down all factors of $225$225.
Separate numbers with a comma.
Easy
2min
Write down all factors of $12$12.
Separate numbers with a comma.
Easy
1min
What number is a factor of every number?
Easy
< 1min
Which of these numbers is $6$6 a factor of?
Easy
< 1min
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