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How are your problem-solving skills? Marcus needs to pick up 18 bottles of water from the supermarket. He can only carry 3 at a time. What’s the minimum number of trips he must take to the store to get all 18?

Fact Lab

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Interesting fact:

Unfortunately, studies have shown a decline in student IQ scores following a summer vacation. So, it looks like the joyous holiday experience may have some drawbacks. Worth it though, right?