It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?
If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?
You have two rectangular wires. Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn. However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes). So how could you measure 45 minutes ?
Count the squares in the matchstick puzzle below?
What number comes next in this sequence: 7 8 5 5 3 4 4 _
A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?
2, 3, 5, 9, 17, _ What is the next number in the sequence?
A kind heart person buy packed food at 3$/packet from United states and sells them at 1$/packet at Africa. After some time he becomes a millionaire. How come the guy become millionaire ?
Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!
Can you replace the question mark with the correct number?
I make two people out of one. What am I?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
