Logic Riddles

Question: As I was going to St. Ives,
I met a man with seven wives,
Each wife had seven sacks,
Each sack had seven cats,
Each cat had seven kits:
Kits, cats, sacks, and wives,
How many were there going to St. Ives?

Question: You have a horrible disease but thankfully there is a medicine for it. Everyday you must take one pill called Batz and one pill called Scatz. On the very first day, you pour one Batz in your hand then you pour two Scatz in your hand by accident! These pills are identical and if you take too much or too little of either pill on any day you will die. You cannot get a refill or throw any pills away.

How can you still take the pills you have in your hand and live?

Question: You are in a room with two metal rods and no other metal. One of them is magnetized and the other is not.

How can you determine which one is magnetized and which is not?

Question: What relation would your father's sister's sister-in-law be to you?

Question: Using 3 periods (.) and 1 question mark (?) make this a logical and grammatically correct sentence:

"That that is is that that is not is not is that it it is"