Just For Fun Quiz / Word/# logic

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Can you name the Right letter from the clues??

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My first is my fourth minus my second.
My second is my fourth minus my first.
My center is the average of my first and last.
My fourth is my first plus my second.
My last is my center times twice my second, minus my first.

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TV Casts of the 1960s

by spotoneout

Let's curl up on the couch with some reruns.
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