Riddle: Betty and Becky are twins, who love to lie on certain days. Betty lies on Mondays, Tuesdays, and Wednesdays, while Becky lies on Thursdays, Fridays, and Saturdays. One day, you come up to the twins and ask them what day it is. They say, "Yesterday was one of my lying days," in unison. What day is it?
Answer: It can't be Sunday because both girls would be telling the truth…and someone is obviously lying now. It can either be Monday or Thursday because on those days, either Betty or Becky lies. But if it's Monday, both girls would lie saying yesterday was a lying day. Therefore, it's Thursday; Betty is telling the truth, and Becky is lying.
Riddle: Reuben, a renowned author, was found unconscious in his study on a Sunday morning. His agent, Kelly, called the police to report it. When the officers arrived, they questioned three suspects: Anna the nanny, Mike the cleaner, and Mark the driver. Anna said that she had driven Reuben's daughter to school. Mike said that he had a day off and spent it with his family. And Mark said that he had taken Reuben's car to the car wash. Who attacked Reuben?
Answer: Anna the nanny is lying. Children don't go to school on Sundays.
Answer: The ambiguity of this riddle means that the answer could be either two or three. But the real answer is three because you have to follow the order of operations (half of two is one, and one plus two is three).
Riddle: One day, down at the South Pole, five penguins and twice as many polar bears got onto a train. The train was headed to another station that was 15 minutes away from where it was initially. What is wrong with this story?
Answer: Polar bears live at the North Pole, while penguins live at the South Pole. They can't coexist at the same Pole.
Riddle: A butterfly flies to a rock in the middle of a huge lake and stops to rest. If it swims North, it's five minutes to the mainland. If it swims East, it's four minutes to the mainland. If it swims South, it's three minutes to the mainland. And if it swims West, it's two minutes to the mainland. In which direction should the butterfly swim?
Answer: The butterfly shouldn't swim in any direction because butterflies don't swim; they fly!
Riddle: A man wearing a red shirt lives in a red house. A man wearing a yellow shirt lives in a yellow house. A man wearing a blue shirt lives in a blue house. Who lives in the white house?