TODAY’s BRAIN TEASER: I am taken from a mine, and shut up in a wooden case, from which I am never released, and yet I am used by almost everybody. What am I?
3 thoughts on “TODAY’s BRAIN TEASER: I am taken from a mine, and shut up in a wooden case, from which I am never released, and yet I am used by almost everybody. What am I?”
Coal.
Gold
Lead in pencils.