There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?

Can you count the number of squares in the figure below?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

What happened when the wheel was invented?

You throw me out when you want to use me and you take me in when you don't want to use me.

Who Am I?

They are three errirs in this question. Can you find them?

A fresher was sitting in an interview. The interviewer said, "This is the last question of your interview. Tell me the accurate position of the centre of this table where your resume is kept."

How can he answer this question? What will you have answered to such a question?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

Be active and find the killer in the picture Riddle below.

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?