When we see 2 but call 10?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

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

A spy was in Canada trying to steal insider information on how to set up new Maple Syrup factories in their country. He was introduced to the operations manager of the biggest factory in Canada. However, the manager was suspicious and decided to test him with a question before he trusted him. So he asked, “What would you be sure to find in the middle of Toronto?” The spy thought fast and came up with an answer for the manager. What was his answer?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

One evening there was a murder in the home of a married couple, their son and daughter. One of these four people murdered one of the others. One of the members of the family witnessed the crime.

The other one helped the murderer.

These are the things we know for sure:

1. The witness and the one who helped the murderer were not of the same sex.

2. The oldest person and the witness were not of the same sex.

3. The youngest person and the victim were not of the same sex.

4. The one who helped the murderer was older than the victim.

5. The father was the oldest member of the family.

6. The murderer was not the youngest member of the family.

Who was the murderer?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?