40. the product of all positive even numbers less than or equal to 20 is closest to which of the following?
A. 10的六次方 B.10的7次方 C.10的8次方 D.10的9次方 E. 10的10次方
8.During a sale, a store sells 20 percent of its remaining stock each day,without replenishment. After 4 days, what fraction of its original stock has it sold?
A.1/625 B.256/625 C.61/125 D.64/125 E. 369/625
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发表于 2014-9-4 16:15:27
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