Who is that with a neck and no head, two arms and no hands? What is it?

A man plots the murder of his wife. His plan is full proof. Nobody saw them leaving their house. He stabbed her with a knife while driving. She died on the spot. He threw her body in a valley. He threw the knife carefully wiping his finger prints on a random garbage bin. Then he went back to his home and no one was watching him this time as well.

After an hour, he was called by the local police department who informed him that his wife was murdered. They asked him to reach the scene of crime immediately. But as soon as he arrived at the crime scene, he was arrested by them.

How did the police know that he himself is the murderer?

An exterior architect is asked by a builder to plant seven trees in a manner that there are exactly six rows of trees in a straight line and each row has three trees in particular.

How will he do it?

Open a Laptop which is password protected. Hint for the password is given as below:

1 mobile 3 books 2 Boards 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

Solve the following series:
AZ, GT, MN, __, YB

A man is shown a portrait painting. He looks closely, then tells, “Brothers and sisters have I none, but that man’s father is my father’s son!” Who is the man in the portrait?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?