There are eight pills. They are all the same size and color. One pill weighs slightly more than the others and it is poisonous. You have a balanced scale and can only use it twice. How can you find the poisoned pill?
Riddle AnswerMath Riddles
Getting Home with the Money
Johnny is walking home. He has $300 to bring home to his mom. While he is walking, a man stops him and gives him a chance to double his money.
The man says, “I’ll give you $600 if you can roll 1 die and get a 4 or above, you can roll 2 dice and get a 5 or 6 on at least one of them, or you can roll 3 dice and get a 6 on at least one die. If you don’t I get your $300.”
What does Johnny do to have the best chance of getting home with the money?
Riddle Answer15 Minute Intervals
A patient is given five different tablets to take at night at an interval of 15 minutes. How long will it take the patient to consume all the five tablets?
Riddle AnswerCake of Soap
If you place 1 cake of soap on a pan of a scale and 3⁄4 cake of soap and a 3⁄4 pound weight on the other, the pans balance. How much does a cake of soap weigh?
Riddle AnswerSaving Time
Our man Ostap was going home from Kiev. He rode halfway by train – fifteen times as fast as he goes on foot. The second half he went by ox team. He can walk twice as fast as that. Would he have saved time if he had gone all the way on foot? If so, by how much?
Answer
Yes. He took as much time for the second half of his trip as the whole trip would have taken on foot.
So no matter how fast the train was, he lost exactly as much time as he spent on the train. He would have saved 1⁄30 of the time by walking all the way.