Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

My location can be determined by the below rebus.
So where am i ?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

Replace the question mark in the picture below.

If we tie a Sheep to one peg, a circled grass is been eaten by the Sheep. If we tie the Sheep to two pegs with a circle on its neck, then an eclipse is eaten out of the grass by the Sheep. If we want an eclipse then we put two pegs and then put a rope in between them and the other end of the rope is tied up on the Sheep's neck.

How should we tie the peg and the Sheep so that a square is eaten out from the garden grass? We only have one Sheep rope and the peg and the rings.

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

Find out the missing number in the picture attached: