Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

There is a certain crime, that if it is attempted, is punishable, but if it is committed, is not punishable. What is the crime?

Count the number of triangles in the picture below:

Jack and Joseph are well-known golf rivals. One Day during a match, they were level at a score of 30. Jack hit a bad shot and Joseph added 10 to his score. Joseph then hit an awesome shot and he won the game.

How ?

What has to be broken before you can use it?

Women do it once a year after they turn 19 but men get to do it only once in a lifetime. What is it?

A father's child, a mother's child, yet no one's son.

Who am I?

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

Why Aeroplane windows are round?

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