If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age. How old will John be two years from now?
A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result. Can you find how bias is the floor in this case?
What has one eye, but can’t see?
If two's company, and three's a crowd, then whats four and five ?
Take one out and scratch my head, I am now black but once was red. What am I?
Can you find the hidden animal in the picture below?
How do you go from 98 to 720 using just one letter?
You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.
What is the centre of gravity?
What has a ring but no finger?
Can it be possible to build a house that has all its four walls facing towards the South?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
