What has a ring but no finger?
A bomb exploded in a room full of married couples and no one died. How?
If an earthquake is 1 point higher on the Richter Scale than another earthquake which is actually 10 times stronger, how much stronger would an earthquake be if it was just half a point higher on the Richter scale?
Take one out and scratch my head, I am now black but once was red. What am I?
Can you find the key in the picture below?
John can place six large boxes or nine small boxes into a carton. Can you find out in how many cartons can he place sixty-six boxes in total?
Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?
Replace the 'X' with any mathematical symbol to make the expression equal to 111. 18 X 12 X 2 X 3 = 111
Can you count the number of blocks in the picture below?
What is at the end of a rainbow?
You have to put a letter on the following to make it a meaningful word. The only challenge is that you can't use 'E'. S E Q U E N C _
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.