John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

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?

Why is the longest human nose just 11 inches?

Which is the smallest number that you can write using all the vowels exactly once?

Can you find the odd one out from the below words ?

First Second Third Forth Fifth Sixth Seventh, Eighth Nine Ten Eleven Twelve.

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

Rob is taller than Edwin, and Jurgen is shorter than Rob.
Of only one of the following statements, we now certainly know it is correct:

A.Edwin is taller than Jurgen
B.Jurgen is taller than Edwin
C.It cannot be determined if Jurgen or Edwin is the tallest.

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

If an electric train is travelling south, then which way is the smoke going?

What does this below rebus puzzle mean?