Why do Vampires have resistance to Silver?

[Mulet]

I'm the DM, and I read that Vampires have 10 Damage resistance to Silver. Did I misread this?

[Camber_Ludwik]

I believe they have DR/10 Silver and Magic.

Which means that a weapon needs to both be silver and magic to penetrate it.

They are weak against silver rather than having resistance to it.

[Barathos]

Vampires have DR10/silver&magic.
It means they resist all physical attacks that are not silver AND magic. They are vulnerable to magic silver weapons.

[blahpers]

Read this section. It tells you almost everything there is to know about how damage reduction (or DR) works in Pathfinder.

[Mulet]

Thank you for clearing that up.