How to cook Perfect Rice

〈ingredients〉white rice cook in a rice cooker
3 cups Japanese short-grain rice
3 cups water

〈ingredients〉multi-grain rice cook in a pot
2 cups Japanese short-grain rice
tablespoon multi-grain
2＋2/5 cup water

〈ingredients〉brown rice coon in a pressure cooker
3 cups Japanese short grain brown rice
3 3/4 cups water
A pinch of salt