There are two sisters: one gives birth to the other and she, in turn, gives birth to the first. Who are the two sisters?

Answer: Day and night.

More Logic Riddles with answers

More Logic Riddles

There is a dog on one side of a lake and a woman on the other. The woman calls the dog over and when he gets there he is not wet at all. How is this possible?
There were 5 children in a room. Iris drew a picture, Barry played video games, Andrew played chess, and Trina read a book. What is the fifth child, Mindy, doing?
Three doctors said that Bill was their brother. Bill said he had no brothers. Who was lying?
Twelve pears hanging high, twelve men passing by. Each took a pear and left eleven hanging there. How can this be?
Two fathers and two sons are in a car, yet there are only three people in the car. How is this possible?
What always comes into a house through the keyhole?
What can fill an entire room without taking up any space?
What can I not be tomorrow?
What can you fill a room with that takes up no space?
What can you hold in your right hand but never in your left hand?
What can you stick between a 3 and a 4 so that the result is more than three but less than four?
What coin doubles in value when half is deducted?