A four-digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?

Find the value of "?" in the ball picture Riddle below:

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?

What is black when you buy it, red when you use it, and gray when you throw it away?

Can you spot the hidden girl in the picture below?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

What type of tree can I carry in my hand?

What country can make you shiver?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?