Long Riddles and Answers

Question: Decapitate me and all becomes equal. Then truncate me and I become second. Cut me front and back and I become two less than I started. What am I?

Question: You need a room for your group. Each person needs 5 square feet of space. You have 25 people in your group, what is the smallest room you can use?

Question: There are 2 brother's, the oldest is 4 yrs old. The little brother Is 1/2 his age. When the big brother is 100 how old will the little brother be?

Question: I live off of a busy street,
if you want you can stay for an hour or two,
but if you don't pay rent I'll tell on you.

What am I?

Question: Thirty men and only two women, but they hold the most power.
Dressed in black and white, they could fight for hours.

Who are they?