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Explanation

During its theatrical run, Avatar broke several box office records.

Solve this puzzle

How fast does a Hummingbird's heart beat a minute?

2,200 bpm 1,300 bpm 990 bpm 300 bpm

How Many is “Many,” or What is the Largest Possible Number?

As soon as a child gets to know the difference between “singular” and “plural,” he/she unconsciously wants to find out how many is “many,” or whether there is a number to quantify everything in the Universe.