What has no start, end, or centre?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

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.

A man comes across a coin that is dated 226 B.C. Can you calculate its worth?

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

In the picture below can you find the correct switch that will turn on the bulb?

What makes this number unique: 8,549,176,320?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?