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?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

There are forty elephants and they have forty-fore heads. How can this be possible?

Which flower has two lips?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

A Car is crossing a bridge 2 miles long. The bridge can only hold 10000 lbs, which is the exact weight of the car. The Car makes it half way across the bridge and stops. A bird lands on the car. Does the bridge collapse? Explain.

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

What is at the end of a rainbow?

Why do Chinese men eat more rice than Japanese men do ?