How much is the bat?

[Songsmith]

You have 9 balls the same size. All of them except one weigh the same. The one is very slightly heavier.

Can you find the heavier ball if you can use a pair of balance scales only twice?

 

[Witness2016]

O.k. I have one.. I have a brother and sister born from same parents , they are both 35 today and yet they are not twins?
How can that be?

 

[Witness2016]

O.k. I have one.. I have a brother and sister born from same parents , they are both 35 today and yet they are not twins?
How can that be?

Sorry about that we posted the same time..