Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211
Can you solve the maths in the below-given picture equation?
Do You See It?
What do you call a fish without an eye?
What has 13 hearts but no other organs?
Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?
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?
Solve the equation by replacing the alphabet with numbers.
MOM + MOM + NO = BOOK=
There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number.
What is the smallest number that stands true on the statement?
How can you leave a room with two legs and return with six legs?
There are four people in a house. A fireman, an athlete, an old woman, and a drunk guy. The house catches fire and before the fact is known, it is too late. All they know is that the entire house is in flames and it will collapse exactly after twelve minutes. Now they can move out of the house but for that, they will have to pass the hallway which is entirely blazing with flames. Thus to move, one must carry a fire extinguisher to keep the flames away. Seeking the burnt wooden floor, only two people can run through that hallway at one time. But for others to go, one must return back with the fire extinguisher. The fireman is trained for such tasks and can run through the hallway in a minute. The athlete can make it in a couple of minutes. The old woman can run slowly and will cover the hallway in four minutes. The drunk guy will take five minutes to run through it. If all of them can make it through the hallway in twelve minutes, all of them will be saved. When two move together, they will run at the speed of the slower ones.
How will all four of them manage to run to safety?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.