John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

The more it dries, the wetter it becomes. Can you tell what it is?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

How can you tell a raw egg from a hard-boiled egg?

Wednesday, Steve and Pam go to a restaurant to eat lunch. After eating lunch, they pay the bill. But Steve and Pam do not pay the bill. So…who does?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

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

Who am I?

We can be boring,Or interesting.
We can be long,Or short.
We can have pictures,Or just words.
Many love us,But many also hate us.
What are we?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?