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

O T T F F S S ?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

What demands an answer, but asks no questions

You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs?

Why is the longest human nose just 11 inches?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

What four weights can be used to balance from 1 to 30 pounds?