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一题taotao9
For any integer k greater than 1, the symbol k* denotes the product of all the fractions of the form , where t is an integer between 1 and k, inclusive. What is the value of ?
答案 1／5，
我算的是1／4， 相问问看， between 1and k 中， 包不包括 1 和k?? |
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