Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

I throw two dice simultaneously.

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

A clock loses 10 minutes each hour. If the clock is set correctly at noon, what time is it when it reads 3 PM?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

What is the riddle which can be asked all day with a different correct answer each time.

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Who has married many women but was never married?

No matter how little or how much you use me, you change me every month. What am I?

81 x 9 = 801. What must you do to make the this equation true?