Move four matchsticks to the below square to form three squares?

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

A convention is held where all the big logicians are summoned. The master places a band on everyone's forehead. Now all of them can see others bands but can't see his own. Then they are told that there are different colours of bands. All the logicians sit in circle and they are further explained that a bell will ring at regular intervals. The moment when a logician knew the colour of band on his forehead, he will leave at the next bell. If anyone leaves at the wrong bell, he will be disqualified.

The master assures the logicians that the puzzle will not be impossible for anyone of them. How will the logicians manage ?

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

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

What is the last thing you take off before bed?

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.

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

You can see three almost identical images below. Can you spot the odd one out from them?

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