Logic Riddles

Question: What time is it when its 10:30?

Question: Jerry had a wife that will always delete the pictures of mouse from Jerry's phone when Jerry is asleep. 1day, Jerry saw a mouse and he wanted to take a picture of it. After taking the picture, he went Asleep. Why can he still see the picture next morning?

Question: What comes up but never comes down?

Question: Decapitate me and all becomes equal. Then truncate me and I become second. Cut me front and back and I become two less than I started. What am I?

Question: 1 is 3, 3 is 5, 5 is 4, 4 is perfect. Why?