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填空题
If t is a positive integer, and 18t is the cube of an integer, then what is the least possible value of t ?____
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解析:
因为13=1, 23 =8, 33=27, 43 =64, 53=125这几项等不能被18整除,而第六项63=216能被18整除因为216= 18×12,所以t=12。
因为13=1, 23 =8, 33=27, 43 =64, 53=125这几项等不能被18整除,而第六项63=216能被18整除因为216= 18×12,所以t=12。
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