Find the number of squares in the below-given picture.

John went to a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?

Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

If 2 workers can complete painting 2 walls in exactly 2 hours.

How many workers would be needed to paint 18 walls in 6 hours?

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

I am an odd number. Take away a letter and I become even. What number am I?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Why Aeroplane windows are round?

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