Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

What can you see in the middle of March and April that you can never see in any other month?

What is harder to catch the faster you run?

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?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

Replace the question mark in the picture below.

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

Who am I?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

With the help clues provided in the image, can you find the 5 digit key?