The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?

What number should come in place of the question mark below?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

You have two rectangular wires.

Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn.

However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could you measure 45 minutes ?

In the Mexico City area, there are two Houses H1 and H2. Both H1 and H2 have two children each.
In House H1, The boy plays for Mexico Youth academy and the other child plays baseball.
In House H2, The boy Plays soccer for his school in Mexico and they recently have a newborn.

Can you prove that the probability of House-H1 having a girl child is more than that of House-H2?

Look at the picture and find out which square is not linked with any of the other squares.

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

By using 'because' continuously three times, can you make an English statement ?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

What does below Rebus mean ?

esgg sgeg gegs gsge