What happened when the wheel was invented?

John: "Hi Teacher, What is your favourite movie ?".
Chemistry Teacher: "Indium Cerium Platinum Iodine Oxygen Nitrogen".
Ten seconds later... John replied I got it.

Do you?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

You can see three almost identical images below. Can you spot the odd one out from them?

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

Four cars come to a four-way stop, each coming from a different direction. They can’t decide who got there first, so they all go forward at the same time. All 4 cars go, but none crash into each other. How is this possible?

What will you call your mother's brother's brother-in-law?

If six children and two dogs were under an umbrella, how come none of them got wet?