With the help clues provided in the image, can you find the 5 digit key?

A river should be crossed by a father, a mother and their two sons and two daughters.
There are some rules that should be followed while crossing the river. There can be only two people in the raft while crossing. The daughters cannot be with their father unless there is the presence of the mother. The sons cannot be with their mothers unless the father is present. Unless the guard is on the board, the criminals cannot be with any of the family members. Only the adults like the father, the guard, and the mother knows to use the raft.

How will they cross the river?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

How can you make number one disappear by adding something to it?

Imagine you are in a room with no windows or doors. How will you get out?

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

You can hear me, but you can't touch or see me.

What am I?

What is the last thing you take off before bed?

If eleven plus two equals one, what does nine plus five equal?

A deaf and mute man goes to the train station. Tickets for the train are 50 cents each. The man goes to the ticket booth and hands the man inside just a dollar. The man in the booth hands him two tickets.

How did the man in the booth know to give him two tickets without even looking at him?