Out of four images which one is the odd one out?

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?

Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

Why is the Hole below a Lock?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

In the image below, can you find the value of an angle(y)

What brings you down but never up?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?