I am an odd number. Take away a letter and I become even. What number am I?
Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?
If your uncle’s sister is not your aunt, what relation is she to you?
Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?
I taste better than I can smell. Who am I?
What animal walks on four legs in the morning, two legs during the day, and three legs in the evening? Oedipus, the king of Thebes, figured out the answer to the riddle:
Why is the Hole below a Lock?
There are forty elephants and they have forty-fore heads. How can this be possible?
Can you identify the Oscar-winning movie from the rebus below?
What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?
It's a protector. It sits on a bridge. One individual can see directly through it, while others wonder what it hides. What is it?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.