Can you find the odd number in the following?

2716, 4135, 5321 and 7145

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?

Can you spot the man between the coffee bean in the picture below ?

When it's bad luck to meet a black cat?

Using Only Five 5's and any mathematical operator make sum as 37

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

What does this rebus puzzle means ?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

People put me on the table and cut me but do not eat me. What am I?

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?