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20以内的质数有,合数有.

题目详情
20以内的质数有______,合数有______.
20以内的质数有______,合数有______. 20以内的质数有______,合数有______. 20以内的质数有______,合数有______. 20以内的质数有______,合数有______.
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答案和解析
20以内的质数有2,3,5,7,11,13,17,19.
合数有4,6,8,9,10,12,14,15,16,18.
故答案为:2,3,5,7,11,13,17,19,4,6,8,9,10,12,14,15,16,18.
20以内的质数有2,3,5,7,11,13,17,19.
合数有4,6,8,9,10,12,14,15,16,18.
故答案为:2,3,5,7,11,13,17,19,4,6,8,9,10,12,14,15,16,18. 20以内的质数有2,3,5,7,11,13,17,19.
合数有4,6,8,9,10,12,14,15,16,18.
故答案为:2,3,5,7,11,13,17,19,4,6,8,9,10,12,14,15,16,18. 20以内的质数有2,3,5,7,11,13,17,19.
合数有4,6,8,9,10,12,14,15,16,18.
故答案为:2,3,5,7,11,13,17,19,4,6,8,9,10,12,14,15,16,18. 20以内的质数有2,3,5,7,11,13,17,19.
合数有4,6,8,9,10,12,14,15,16,18.
故答案为:2,3,5,7,11,13,17,19,4,6,8,9,10,12,14,15,16,18.