Pick the shell it is under and I will double your money.

Would you like to double your money every three years?

So he has a 0.5 chance of going broke before doubling his money.

You'll double your money on the black market over here.

The owners doubled their money in less than two years.

New Scientist said that the government was planning to double its money for space in the next few years.

So they can double their money in no time at all.

"He's not going to double his money and I am."

Don't the rest of you want to double your money?

At that rate, Japanese investors can double their money in just 174 years.