I am a five-letter word and am feared by most but experienced by all. If you remove my first and last letters I bring life. If you add an ‘r’ between the third and fourth letters I am almost nothing and if you remove the first letter from this new word, I am your home.
Death (eat, dearth, earth). No one can escape death, but many fear it. Removing the first and last letters leaves eat, and we must eat to stay alive. Adding the ‘r’ turns death into dearth, which is scarcity and removing the first letter of dearth leaves earth, where you live, assuming this riddle hasn’t reached extraterrestrials.
You have fifty quarters on the table in front of you. You are blindfolded and cannot discern whether a coin is heads up or tails up by feeling it. You are told that x coins are heads up, where 0 < x < 50. You are asked to separate the coins into two piles in such a way that the number of heads up coins in both piles is the same at the end. You may flip any coin over as many times as you want.