Logic Riddles

Question: I have the same mum as somebody else,the same dad,the same birthday,the same age and the same sisters but we are not twins. What are we?

Question: Jack and Jill lay dead in a room with no doors and one window with bars the only evidence is broken glass, a stone and water on the floor. How did Jack & Jill die?

Question: A couple goes on a plane. The plane crashes. The crash is in all the newspapers, on all the news channels on radio and television, and everywhere for everything. You know why? Because every single person died. But the next day, that same couple are found walking on the street, happy as can be, not a scratch or bruise on them. How can that be? P.S.: For more fun, only read this once. Reading it more will give it away plainly, and you came here to have fun, right?

Question: When the answer I give is yes, it is no, and when the answer I give is no, it is yes. What is the question?

Question: What is the connection between a cricket and a human?