A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?
Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L. Can you find an "ology" that begins with a P?
It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?
Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?
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?
The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total. How much time will he take to have all the five tablets?
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?
Which is the correct shadow of the bird?
Why are all black people so quick ?
Why Aeroplane windows are round?
Can you replace the question mark with the correct number in the below table sequence?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
