求84、126和210的最大公约数（HCF）。
Correct answer(s):
- 42
Topic
因数与倍数
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Quizzes in 因数与倍数 for Grade 8
下面哪些整数对是互质的（没有大于1的公因数）？可多选。
Correct answer(s):
- 14 和 25
- 8 和 15
从下列数中选择所有 360 的因数。
Correct answer(s):
- 12
- 15
- 18
- 20
360 有多少个正因数（正约数）？
Correct answer(s):
- 24