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What is the probability that the first 2 customers both get a 50% discount? What is the probability that none of the 1st 3 customers gets more than a 30% discou

A clothing store advertises that every customer that walks into the store can throw a dice onto a table that has squares labeled with discount amounts. The table is divided into ten regions. 5 regions...

water waves

when water waves pass a log in the water, a smooth area of water is created behind the log.  when the same water waves pass a blade of grass growing in the water there is no smooth area of water...

How fast was the stream flowing?

A girl is swimming downstream. In still water she can swim at 2km/h and the river is flowing with her. She covered a distance of 12km in 2h 24min. How fast was the stream flowing?   a...

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