Last Mind Twister:
Five racing drivers, Alan, Bob, Chris, Don, and Eugene, enter into a contest that consists of 6 races. The results of all six races are listed below:
- Bob always finishes ahead of Chris.
- Alan finishes either first or last.
- Eugene finishes either first or last.
- There are no ties in any race.
- Every driver finishes each race.
- In each race, two points are awarded for a fifth place finish, four points for fourth, six points for third, eight points for second, and ten points for first.
If Frank enters the third race and finishes behind Chris and Don, which of the following must be true of that race?
1] Eugene finishes first.
2] Alan finishes sixth.
3] Don finishes second.
4] Frank finishes fifth.
5] Chris finishes third.
Answer:
4] Frank finishes fifth.
Today’s Problem:
Three guys divided some bullets equally. After all of them shot 4 bullets each, the total number of bullets remaining is equal to the bullets each had after division. What is the original number of bullets that were originally divided among the three?
1] 18
2] 20
3] 54
4] 8