What are RPG dice used for?

What are RPG dice used for? Is used most often in the game, and is the dice which is going to determine all of the strategies and attacks which will be used during game play by players. Also used to determine saving rolls during game play. A percentile dice (variation of the d10 dice) is also used in RPGs like D & D as well.

Is used most often in the game, and is the dice which is going to determine all of the strategies and attacks which will be used during game play by players. Also used to determine saving rolls during game play. A percentile dice (variation of the d10 dice) is also used in RPGs like D & D as well.