In a purse, there are ten coins, all shillings except one which is a sovereign. In another purse there are ten coins all shillings. 9 coins are taken from the former purse and put into the latter, then 9 coins are taken from latter and put into the former. Find probability that the sovereign is still in the former purse

In a purse, there are ten coins, all shillings except one which is a

1.	In a purse, there are ten coins, all shillings except one which is a sovereign. In another purse there are ten coins all shillings. 9 coins are taken from the former purse and put into the latter, then 9 coins are taken from latter and put into the former. Find probability that the sovereign is still in the former purse
Answer» In a purse, there are ten coins, all shillings except one which is a sovereign. In another purse there are ten coins all shillings. 9 coins are taken from the former purse and put into the latter, then 9 coins are taken from latter and put into the former. Find probability that the sovereign is still in the former purse