Question: A van with 15 seats carried only 14 passengers plus the driver. Each passenger entered the van alone and occupied only one seat. Without considering the heart of the driver, upon critical observation, there are 29 hearts beating in the van. How is this possible?
Answer: All the passengers who entered were women who were two months pregnant with one woman who had twins.Therefore, considering the heartbeats of the fetuses and the mothers, they were 29.
Question: You come to a cross road and see a man with two heads. A sign tells you that one head always tells the truth and the other one always lies. The sign also tells you that one road leads to life and posterity while the other leads to certain death. Now the hard part. You can only ask ONE head ONE question. What do you ask? Which road do you take? Hint: One head knows what the other will tell you.
Answer: You ask, "Which road would the other head say." You then take the opposite road. Explanation. If you happened to ask the truth teller he would tell you that the liar would say the wrong road. Therefore you would take the opposite road. If you happened to ask the liar which one the truth teller would say he would lie and say the wrong road. You then would take the opposite road.
Question: You have been poisoned by an evil scientist. He told you that the only antidote is the saliva of a gecko. He contains saliva of six different animals. A gecko, a lizard, a koala, a tapir, a giraffe, and a cow. He hasn’t labeled he test tubes containing the saliva f the animals. On the left is a table which four of the test tubes are one. On the right is a table which two of the test tubes are on. The lizards saliva is poisonous. The lizard and gecko test tubes are on the same table. The test tubes on the left are labelled 1, 2, 3, and 4. The gecko spit will not override the lizard poison. The lizard and gecko saliva are not right beside each other. You don't know where the cow test tube is. You know that the cow saliva is in 2 or 3 however. You know that the lizard test tube is not to the right of the cow. You only have time to drink two test tubes, which side do you run toward and which test tubes do you drink?
Answer: You go to the left side and drink 4 and 3. You don't go to the right because there are only two test tubes on the right, and the lizard poison overrides the antidote to the other poison. The cow is in 2, which means that the lizard is in either 1 or 4, if the cow is 2 that means that the gecko is in 1, 2, or 3. We have deducted that the lizard is 1 or 4, lizard and gecko can't be beside each other and we know that the cow is in 2, which makes it impossible for the lizard saliva to be 3 or 4. Using that we can conclude the lizard is in 1. We use three and four because the gecko, through deduction, is in 3 or 4.
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