Math Help Please?

Science & Mathematics by Anonymous 2018-09-20 02:38:06

Social Science

Math Help Please?

No response

Suppose you have a wallet that contains either a $1 bill or a $10 bill (with equal probability). You add a $1 bill. Later you reach into your wallet and randomly remove a bill. It's a $1 bill. What's the probability that the bill remaining in the wallet is a $1 bill?