Replace the question mark with the number below given a simple math problem.

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

Which wheel of car does not rotate when you turn your car right?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

There were two grandmothers and their two granddaughters.
There were two husbands and their two wives.
There were two fathers and their two daughters.
There were two mothers and their two sons.
There were two maidens and their two mothers.
There were two sisters and their two brothers.
Yet there are only six, who are buried here,
All are born legitimate and relationships clear.
How can this happen?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

A boy was driving a car, a girl took a lift from her. She asked his name. The boy said - my name is hidden in my car’s number, find it if you can. After this, she got down Car number was [ WV733N ] Can you guess the name now?

Take one out and scratch my head, I am now black but once was red. What am I?

Count the number of triangles in the given picture.

A man wants to cross the pit of fire which is 25 feet in length and he has 2 planks(fire resistant) 19 feet in length. How can he cross the pit of fire alive?