Which is heavier: a ton of bricks or a ton of feathers?

What happened when the wheel was invented?

John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

I am white when I am dirty, and black when I am clean. What am I?

who is silent in the parliament?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

A lion and its tamer are standing inside a cage that measures 1 unit in radius. Both of them can effortlessly run at the speed of 1 unit maximum.

1) Suppose the lion is hungry, will he be able to eat up the tamer?
2) If yes, how long can the tamer survive?

A horse was tied to a rope 5 meters long and the horses food was 15 meters away from the horse. How did the horse reach the food?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

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