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?
John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller. I called their home number and one of them picked up. I asked. 'Does John lie?' The person replied with a yes. Whom did I talk with, John or Jacob?
A sundial has the fewest moving parts of any timepiece. Which has the most?
There is a box full of marbles, all but two are blue, all but two are green, and all but two are red. How many marbles are in the box?
Take one out and scratch my head, I am now black but once was red. What am I?
A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?
What common phrase is represented by the below lines Easy going: Weak, 'I'm going.' Tough, 'I'm staying.' Medium going: Weak, 'I'm going.' Tough, 'I'm staying.' Tough going: Weak, 'I can't do it, I'm staying!' Tough, 'Let's get going.'
On a bus, there is a 26-year-old pregnant lady. A 30-year-old policeman. A 52-year-old random woman. And the 65-year-old driver. Who is the youngest?
John was going on a jungle trip. He asked his wife to pack something to eat, something to drink and something to burn if he feels cold in the jungle. When John opens the backpack he found just one thing in the bag. What was it?
There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.
Alpha is Beta's sister. Gamma is a Beta mother. Delta is Gamma's father. Tango is Delta's mother. Then, How is Alpha related to Delta?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
