What is the next number in this series?

4,12,84,3612....

A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

In the following series, a set of numbers is progressing with a particular pattern. Can you deduce that pattern and find the missing set?

(2 + 6), (21 + 6), (58 + 6), (119 + 6), ___

Can you name four days which start with the letter 'T'?

Can you find the 09 errors in the picture below?

Can you name some countries which do not have the alphabet 'A' in them?

A game is being played where eight players can last for thirty-five minutes. Six substitutes alternate with each player in this game. Thus, all players are on the pitch for the same amount of time including the substitutes.

For how long is each player on the pitch?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

This is a simple one. You just have to count the number of Fs in the given sentence.

Finished Files are the result of years of scientific study combined with the experience of years.

How many did you count?