This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

What number do you get when you multiply all of the numbers on a telephone's number pad?

What does this below rebus puzzle mean?

A sundial has the fewest moving parts of any timepiece. Which has the most?

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?

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

Which word does the below Plexor means ?

What is red and smells like blue paint?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?