Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

Replace the question mark with the correct number in below Picture:

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

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?

A man is found unconscious in front of a store at two in the morning. His head is bleeding and there’s a brick laying next to him. When the police arrive, they carry the man to jail. Why did they arrest him?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

Which is the rope you never skip with?

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