It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

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?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

You bought me for dinner but never eat me. What am I?

You are provided with a grid (as shown in the picture). Can you fill the squares with numbers 1-8 in a manner that none of the two consecutive numbers are placed next to each other in any direction (vertically, horizontally or diagonally?)

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

How can you take 2 from 5 and leave 4?

What does the below rebus puzzle mean?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

Identify The phrase in the picture.