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Topic
质数与合数
Practice related MCQ quizzes and improve step by step.
Quizzes in 质数与合数
Arithmetic & Number System
Mathematics
从下列数中选出所有质数:15、17、21、23。
15
17
21
23
Correct answer(s):
17
23
Arithmetic & Number System
Mathematics
下列哪个数是质数
51
57
59
63
Correct answer(s):
59