iQ Quiz Game 23

Test # 23


1.
How many times a blue whale's heart beats?

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Idiom of the Day

keep one's head above water
to have the ability to pay one`s bills
The man is having trouble keeping his head above water since his salary decreased.

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Fact
The a-system used to keep control of paper sizes (a4, a5, a3 etc) was invented in germany in 1930 and became an international standard.      .. More >>
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