What is the below Rebus indicate?

Count the number of times the letter "F" appears in the following paragraph:

FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

What's the only room from which no one can enter or leave

You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?

What occurs twice in a week, once in a year but never in a day?

I’m tall when I’m young, and I’m short when I’m old. What am I?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?