4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

What is next number in the pattern below:

131 517 192 123 ?

A thief is convicted in Mexico. He gets the death penalty. The judge allows him to say the last sentence to determine how the penalty will be carried out. If the thief lies, he will be hanged, if he speaks the truth he will be beheaded. The thief tells the last sentence and to everybody's surprise some minutes later he is set free because the judge cannot determine his penalty. What did the thief say?

Can it be possible to build a house that has all its four walls facing towards the South?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

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

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?