Can you name four days which start with the letter 'T'?

John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller.

I called their home number and one of them picked up.
I asked. 'Does John lie?' The person replied with a yes.

Whom did I talk with, John or Jacob?

What can you hold in your right hand, but never in your left hand?

Can you move 2 matchsticks to form four equal sized squares.

Spot what is wrong here in below Picture?

Suppose you are a girl candidate and sitting in an interview. Suddenly the interviewer asks you, 'What if one morning you wake up and find out that you are pregnant?

How will you reply to such a question?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

Which is the smallest number that you can write using all the vowels exactly once?

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?