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题库 / OG2017Q-PS-136
A certain manufacturer sells its product to stores in 113 different regions worldwide, with an average (arithmetic mean) of 181 stores per region. If last year these stores sold an average of 51,752 units of the manufacturer's product per store, which of the following is closest to the total number of units of the manufacturer's product sold worldwide last year?
106
107
108
109
1010
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1.1x 10(2) * 1.8 x 10(2) * 5.2 x 10(4) ( since 1.1 * 1.8 = 2)
= 2 x 10(4) * 5 x 10(4) = 10 x 10(8) = 10(9