A Fun Zone's Brain Teaser #57

A brain teaser is a form of puzzle that requires thought to solve. It often requires thinking in unconventional ways with given constraints in mind; sometimes it also involves lateral thinking. Logic puzzles and riddles are specific types of brain teasers.
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The Brain Teaser: Scroll Down for your Solution

I am periodically the number 79.
Long ago some attempted to make me from 29 but learned it couldn't be done. If you add me to 80 I appear to be 47 temporarily.
What am I?


The Solution

Definition of solution - a means of solving a problem or dealing with a difficult situation. Our Free Brain Teaser Newsletter