What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

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?

What is black when you buy it, red when you use it, and gray when you throw it away?

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

What English word has three consecutive double letters?

What can go up a chimney down, but can’t go down a chimney up?

Solve the equation in the image by looking at the pattern closely.

I always drive my customer away.

Who am I?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?