what one word does the below rebus identifies?

John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

What is the riddle which can be asked all day with a different correct answer each time.

The more of this there is, the less you see. What is it?

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?

Can you count the number of squares in the given picture?