Randomly Generate Coins

How can I generate randomly coins at different places in a single world?

 

Yes! Just place the coins in places that they can spawn in and then just set the spawn rate to like 20 or 50 depending on how many coins you have per level

 

Thanks for you help actually by doing this all coins appear once. But I need when 1 coin is collected then after sometime it appears on any other place on same world and scene.