Logic Riddles

Question: Vanitha goes to park on oct 2 sunitha on oct 3 ramya on oct4 sheela on oct 5 on which date all four friends meet at the park.

Question: The sky is blue, the sea is green. The answer never ends in-between.

Question: What Two Things Always Ask A Question But never Answer It?

Question: You're in a VERY dark room. You enter it, and immediately everything you see dissolves into darkness... But suddenly, you see the faintest red light. You COMPLETELY close and cover an eye, but You can still see the red light. How is this possible?

Question: A shield can reflect projectiles which travel at 4/5 of their original speed after being reflected. A missile is shot towards the shield at 700 km/h. At what speed did it go after its reflection?