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Mondo Fuego™
Brain Teasers
Wed Sep 13, 2017 3:52pm
68.114.135.59

1. During a recent census, a man told the census taker that he had three children. When asked their ages, he replied, "The product of their ages is 72. The sum of their ages is the same as my house number." The census taker ran to the man's front door and looked at the house number. "I still can't tell," she complained. The man replied, "Oh that's right, I forgot to tell you that the oldest one likes chocolate pudding." The census taker then promptly wrote down the ages of the three children. How old are they?

2. You are walking down a road and come to a fork. One path leads to certain death; the other leads to eternal happiness. You don't know which is which. In the middle of the fork, you come across two brothers who know which road is which. One brother always tells the truth and the other always lies. You can only ask them one question. How would you determine which road to take?

3. A farmer needs to take a fox, a chicken, and a sack of grain across a river. The only way across the river is by a small boat, which can only hold the farmer and one of the three items. Left unsupervised, the chicken will eat the grain, and the fox will eat the chicken. However, the fox won't try to eat the grain, and neither the fox nor the chicken will wander off. How does the farmer get everything across the river?

4. An old man dies, leaving behind two sons. In his will, he orders his sons to race with their horses, and the one with the slower horse will receive his inheritance. The two sons race, but since they're both holding their horses back, they go to a wise man and ask him what they should do. After that, the brothers race again — this time at full speed. What did the wise man tell them?

5. You're escaping a labyrinth, and there are three doors in front of you. The door on the left leads to a raging inferno. The door in the center leads to a deadly assassin. The door on the right leads to a lion that hasn't eaten in three months. Which door do you choose?

6. Four people arrive at a river with a narrow bridge that can only hold two people at a time. It's nighttime and they have one torch that has to be used when crossing the bridge. Person A can cross the bridge in one minute, B in two minutes, C in five minutes, and D in eight minutes. When two people cross the bridge together, they must move at the slower person's pace. Can they all get across the bridge in 15 minutes or less?

7. There are five bags of gold that all look identical, and each has ten gold pieces in it. One of the five bags has fake gold in it. The real gold, fake gold, and all five bags are identical in every way, except the pieces of fake gold each weigh 1.1 grams, and the real gold pieces each weigh 1 gram. You have a perfectly accurate digital gram scale and can use it only once. How do you determine which bag has the fake gold?


    • Answer to problem #5 ~ DFM, Thu Sep 14 7:54am
      5. You're escaping a labyrinth, and there are three doors in front of you. The door on the left leads to a raging inferno. The door in the center leads to a deadly assassin. The door on the right... more
    • Answer to problem #2 ~ DFM, Thu Sep 14 2:00am
      2. You are walking down a road and come to a fork. One path leads to certain death; the other leads to eternal happiness. You don't know which is which. In the middle of the fork, you come across two ... more
    • Solution to problem number 1. ~ DFM, Thu Sep 14 1:57am
      Each age must be a divisor of 72 and here they are: 1,2,3,4,6,8,9,12,18,24,36,72 Call the ages of the three kids A, B, & C and, without loss of generality, assume that A Table below shows all... more
    • Quicky puzzle. ~ DFM, Wed Sep 13 4:42pm
      Guy came back from winter in Alaska. His friends asked him how cold it was. He responded, "the number of degrees below zero was terrifying." A friend asked, "Was that celsius or fahrenheit?" He... more
      • Sweet ~ Mondo Fuego™ , Wed Sep 13 4:52pm
        Minus 40
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