The rich need me, the poor have me. If you eat me, you'll die.

I am an odd number. Take away a letter and I become even. What number am I?

I am an odd number. Take away one letter and I become even. What am I?

First is the first of first, last is the last of last, the other two are between you!

I speak to end, yet end to speak, I’m strongest when my truth is weak. I bind the wise, confuse the sane, I’m freedom’s lock and logic’s chain. I live in questions, die in proof What am I, that undoes truth??