Brain teasers

 

Courtesy of Jenni Bull.

Question Answer
Which is correct to say, “The yolk of the egg are white” or “The yolk of the egg is white”? Neither. The yolk of the egg is yellow.
Pete Polyester, a door-to-door salesman, was selling a high tech car wax that he claimed was harder than steel. Pete offered one container for $19 or two for $33. He said that his profit was the same either way and, since these were his last two containers, he simply wanted the quick sale. If we take Pete's word for his profit margin, what must each container of wax cost him? $14. Since Pete makes no extra profit on the second container, he must be selling it at cost. The difference between $19 and $33 is $14.
At 7am, a train moving 90kph leaves Melbourne heading for Adelaide. At 8am, a train running 110kph leaves Adelaide heading for Melbourne. Which train will be closest to Melbourne when they meet? When they meet, they will be in the same spot.
A man rides into town on Friday. He stays for three days and leaves on Friday. How is this so? ‘Friday’ was the name of the man’s horse.
What occurs once in every minute, twice in every moment, yet never in a thousand years? The letter M.
Three men checked into a hotel room for which they paid $30. The next day, the manager glanced at the records and realised that the men had been overcharged. She gave the bellhop $5 to return to the three men. On the way to their room the bellhop decided to keep $2 for himself, and give each of the three men $1. The three men had now paid $9 each, or a total of $27. This, plus the $2 the bellhop kept makes a total of $29. What happened to the other dollar? Nothing! It's one of those strange things about the way it is added. If added sequentially it looks like this: The hotel collected $25, the three men were each given $1 back, and the bellhop kept the $2. The total now comes to $30.
Before Mount Everest was discovered, what was the highest mountain on earth? Mount Everest.
Two mothers and two daughters were fishing. They managed to catch one big fish, one small fish, and one fat fish. Since only three fish were caught, how is it possible that they each took home a fish? The fishing party consisted of three people. A grandmother, a mother and a daughter. The mother is both a mother and a daughter.