conundrums

. Some ducks were walking down a path. There was a duck in front of 2 ducks, a duck behind 2 ducks, and a duck between 2 ducks. How many ducks were there in all?

(Answer: three) . Before Mount Everest was discovered, what was the highest mountain on Earth? . There are a total of sixteen birds and dogs. There are sixty two feet. How many birds and how many dogs make up the sixty two feet?

(Answer: fifteen dogs and one bird)