You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

A man hijacks an aeroplane transporting both passengers(8 of them) and valuable cargo. After taking the cargo, the man demands nine parachutes, puts one of them on, and jumps, leaving the other eight behind. Why did he want eight?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

The centre of the third figure is empty. What digit should fit inside?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. I am twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put together.

How old is the man's son ?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?