一道GRE数学题,谁帮我看看阿?
d=5.03894andcisthedecimalexpressionfordroundedtothenearestthousandth.
thenumberofdecimalplaceswheredandcdiffer4
thenumberofthedecimalplaceswheredandcdiffer说c精确到千分位是5.039不太理解,
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