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?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

How many letters are in the alphabet?

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

Can you fill the blank with the correct number?

6 30 870 756030 _____

What is the relationship between these matchstick pictures below?

Can you identify the Oscar-winning movie from the rebus below?

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

In the four images below, can you find the odd one out?