How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

What part of the chicken has the most feathers?

How can you make number one disappear by adding something to it?

What is the fastest way to double your money?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

I look at you, you look at me I raise my right, you raise your left. What am I?

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

What can you see in the middle of March and April that you can never see in any other month?

I am quite hot but become too cold if you remove the first two letters. What am I?