A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?

Count the squares in the matchstick puzzle below?

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

What is the end of everything?

Can you count the number of children in the picture below

Can you identify the hidden rebus in the image below?

How many letters are in the alphabet?

Can you count the number of triangles in the given picture?