Rectify the following equality 101 - 102 = 1 by moving just one digit.

It is always ahead of me yet I can never see it. What is it?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

If your uncle’s sister is not your aunt, what relation is she to you?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

Which point will the car reach to go out?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?