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What does the '7' in '7UP' mean?

Ever wonder where the "7" in this popular soft drink came from? There are more than a few theories. See which ones you think are most probable.
Live Science

Pi has been calculated to trillions of digits ‪—‬ is that completely irrational?

The result shows that in modern pi calculations, the real battle is no longer just about processor speed but also storage space and efficiency. StorageReview's Dell PowerEdge R772 ...