I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

A worker is to perform work for you for seven straight days. In return for his work, you will pay him 1/7th of a bar of gold per day. The worker requires a daily payment of 1/7th of the bar of gold. What and where are the fewest number of cuts to the bar of gold that will allow you to pay him 1/7th each day?

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.

I am lying and I always lie. Tell me whether I am lying or telling the truth.

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

Which digit occurred maximum times between the number 1 and 1000?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

If two fifty-foot ropes are suspended from a forty-foot ceiling that is twenty feet apart, how much rope will you be able to steal if you have a knife?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?