Answer:
I am an odd number. Take away one letter and I become even. What number am I?
Born of sorrow, grow with age, you need a lot of me to be a sage. What am I?
You buy me to eat, but never eat me. What am I?
What word has kst in the middle, in the beginning, and at the end?
Crooked as a rainbow and slick as a plate, ten thousand horses can't pull me straight. What am I?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.