Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

There are a hundred statements.

First person says: At least one of the statements is false.

Second person says: At least two of the statements is false.

Third person says: At least three of the statements are false.

Fourth person says: At least four of the statements are false.

..

..

..

Hundredth person says: At least a hundred of the statements are false.

Analysing it, how many statements do you think are false and how many are true?

Mr Black, Mr Gray, and Mr White are fighting in a truel. They each get a gun and take turns shooting at each other until only one person is left. Mr Black, who hits his shot 1/3 of the time, gets to shoot first. Mr Gray, who hits his shot 2/3 of the time, gets to shoot next, assuming he is still alive. Mr White, who hits his shot all the time, shoots next, assuming he is also alive. The cycle repeats. If you are Mr Black, where should you shoot first for the highest chance of survival?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

What's the only room from which no one can enter or leave

I am lying and I always lie. Tell me whether I am lying or telling the truth.

Can you find a rabbit in the given picture?

Which city is three-fifths chick two third cat and 50% goat?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?