What is the longest word in the dictionary?

When 99 is considered higher than 100?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?