What was the longest river in the world before the Amazon River was discovered?

Answer: The Amazon, because it was still the longest even before anyone discovered it

More Logic Riddles with answers

More Logic Riddles

When can you add two to eleven and get one as the correct answer?
When does 4 - 1 = 5 ?
When is homework not homework?
Why can't Kevin, who is now living in Canada, not be buried in the USA?
You are participating in the swimming finals at the Olympics. In the final few seconds of the race you narrowly pass the swimmer who was in third place. What place did you get?
You draw a line. Without touching it, how do you make the line longer?
You have a bucket full with 5 gallons of water. What can you ADD to it in order to make it 3 gallons?
10 fish are in a tank. 2 Drown, 4 Swim away, and 3 Die. How many are left?
A bike rider is traveling north at 25 mph, a car passes the bike rider going north at 40 mph. At the same time the bike rider passes a jogger running north at 5 mph. Which will move away from the bike rider at a faster pace, the car or the jogger?
A boy throws a baseball. It travels 40 feet and then goes right back to the boy. How is that possible?
A claustrophobic person gets on a train. The train enters a tunnel just as it is leaving the station. Where is the best place for him to sit?
A girl is sitting in a house at night that has no lights on at all. There is no lamp, no candle, nothing. Yet she is reading. How?