Count the number of triangles in the picture below:
A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?
If your uncle’s sister is not your aunt, what relation is she to you?
Using eight eights and addition only, can you make 1000?
Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?
I had an infinite supply of water and 5 litres and 3 litres jars. How would you measure exactly 4 litres in the least number of steps?
John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2. What is the probability that the other kid is also a girl? Hint: It is not 1/2 as you would first think.
Why do people go to bed?
If eleven plus two equals one, what does nine plus five equal?
There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only. Can you find that number?
Forwards I am heavy, backward I am not. What am I?
The word ladder puzzle was invented by Lewis Carroll, author of Alice’s Adventures in Wonderland.
