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3.12探索规律1先找规律，再填上合适的数。（1）5,10,15,5,10,15,5,10,15，，，。（2）6,12,18,24,30，，，。（3）1,2,4,7,11，，。2选择。... 2024-10-23108010.86 KB2页223
3.13探索规律1先找规律，再填上合适的数。（1）5,10,15,5,10,15,5,10,15，，，。（2）6,12,18,24,30，，，。（3）1,2,4,7,11，，。2选择。... 2024-10-23179410.88 KB2页178
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