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?

If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

What is full of holes but still holds water?

Can you count the number of lines in the below picture?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

what does this picture(rebus) riddle means ?

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

Why do you find that most of the buildings are deprived of the 13th floor?