Can you make four (4) nines (9) equal 100?

Move three sticks of the spiral below to form a square.

Why do people go to bed?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

You can see it everyday, But cannot touch it at will. What is it?

Why is Saturday stronger than Monday?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?