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 clock(12-hour format) and both the needles of the clock overlap at 12:00. After how much time, they will overlap again?
In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.
I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?
Can you spot what's wrong with the following sentence? PETER WAS ANGRY AT HIMSELF BECAUSE HE ACCIDENTALLY LEFT THE THE KEYS TO HIS CAR AT HIS FRIEND'S HOUSE.
If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?
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?
It comprises roots which nobody sees, Much taller than those trees, Up and up it goes, Still it never grows?
How many times can you subtract the number 5 from 25?
What you cannot hold but it is yours?
My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
