Can you find a number that lies one third of the distance between 1/3 and 2/3?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

In The 1st month of this year(the year 2013), I noticed that the date 13-1-13 (13 January 2013) is special.

This date is special as:

Date * Month = Year.

Can you figure out which year of this century has a maximum number of such dates?

One evening there was a murder in the home of a married couple, their son and daughter. One of these four people murdered one of the others. One of the members of the family witnessed the crime.

The other one helped the murderer.

These are the things we know for sure:

1. The witness and the one who helped the murderer were not of the same sex.

2. The oldest person and the witness were not of the same sex.

3. The youngest person and the victim were not of the same sex.

4. The one who helped the murderer was older than the victim.

5. The father was the oldest member of the family.

6. The murderer was not the youngest member of the family.

Who was the murderer?

Count the number of balls in picture below:

What building has the most stories?

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Move three sticks of the spiral below to form a square.