There is a box full of marbles, all but two are blue, all but two are green, and all but two are red. How many marbles are in the box?
Replace the question mark with the correct number. 2 + 2= 4 3 + 3= 18 4 + 4= 48 5 + 5= ?
Complete the series by replacing "?" with the correct number. ST ND RD TH '?'
What number divided by 4 is the same as that number minus 4?
What does this rebus mean? O N C E TIME
What has 13 hearts but no other organs?
What number when divided in half becomes zero?
The cream is heavier than Milk. True or False?
The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?
How many letters are in the alphabet?
Below, you can see three complete equations and one incomplete. Based on the three complete ones, can you complete the incomplete one? 5 $ 4 $ 3 $ 9 = 4215 6 $ 9 $ 2 $ 6 = 3816 4 $ 7 $ 3 $ 3 = 1122 7 $ 2 $ 7 $ 4 = ____
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
