In this case, our research team spoke directly with 3M, and they confirmed that although they had given out free samples in test markets in 1977 and 1978, it wasn't until 1980 that Post-Its were sold in stores.
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They didn't ask when it was invented.. they asked when was it first sold in stores. All i know is if you're smart and you were not sure of the answer.. just divide the money into equal parts.. That's what happens when people get greedy..
A couple million appliances are sold Per year
There are about 40 million hockey pucks sold per year
The Amount Of CD Players That Are Sold Every Year Are 120,000,000 Roughly. There You Go
It is 5%.