If you say my name, I will no longer exist. What am I?
When my father was 31 I was 8. Now he is twice as old as me. How old am I?
While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side. How many houses are there between your home and your grandmother's home?
How many times can you subtract the number two from the number fifty?
I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?
I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal. Who am I?
I go up and I go down. I go up towards the beautiful sky and down toward the green ground. I am present tense. I am past tense too Children love me. Who Am I?
Always in you, Sometimes on you; If I surround you, I can kill you. What am I?
Begin with a word, five letters to my name, Remove the first and last but I am the same Take out my middle and still, I remain. What word am I?
Give it food and it will live; give it water and it will die.
What has to be broken before you can use it?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.