You wake up one morning and there’s been a power outage. You know you have 12 black socks and 8 blue ones. How many socks do you need to pull out before you’ve got a match?
You will need to pull out 3 socks, not 9 socks.
As there are only 2 different colours, you will just need 3 socks to guarantee that 2 socks are of the same colour.
A man ate 100 apples in the past five days. Each day he ate 6 more apples than the previous day. How many did he eat on the 4th day? Riddle Answer
A smart landscaper is given the task of placing 4 trees so that they are all the same distance away from each other. How does he do this? Riddle Answer
How many handshakes occur when a group of 7 people shake hands exactly once with every other person in the group? Riddle Answer
You are given two eggs, and access to a 100-storey building. Both eggs are identical. The aim is to find out the highest floor from which an egg will not break when dropped from a floor. If an egg is dropped and does not break, it is undamaged and can be dropped again. However, once an egg is broken, it cannot be used anymore.
If an egg breaks when dropped from floor N, then it would also have broken from any floor above that. If an egg survives a fall from floor N, then it will also survive any fall below floor N.
What is the minimum number of egg drops required to find the solution? Riddle Answer