If eleven plus two equals one, what does nine plus five equal?

Why is 6 afraid of 7?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

How can you write nineteen in a manner that if we take out one, it becomes twenty?