Can you calculate the probability of getting a sum of six when a dice is thrown twice?

I make two people out of one. What am I?

What does an Island and the letter T have in common?

What kind of band never plays music?

How can you take 2 from 5 and leave 4?

Can you find the thief by just looking at the picture below?

I have branches, but no fruit, trunk or leaves. What am I?

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

I have an eye but still cannot see.

Who am I?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?