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

If your uncle’s sister is not your aunt, what relation is she to you?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

What animal walks on four legs in the morning, two legs during the day, and three legs in the evening?

Oedipus, the king of Thebes, figured out the answer to the riddle:

What is both possible and impossible at the same time?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

What 5-letter word typed in all capital letters can be read the same upside down?

You are on your way to visit your Friend, who lives at the end of the hill. It is his birthday, and you want to give him the cakes you have made. Between your house and his house, you have to cross 5 bridges, and as it goes in the land of make believe, there is a troll under every bridge! Each troll, quite rightly, insists that you pay a troll toll. Before you can cross their bridge, you have to give them half of the cakes you are carrying, but as they are kind trolls, they each give you back a single cake. How many cakes do you have to leave home to make sure that you arrive at a friend's house with exactly two

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?