40 Hard Logic Riddles Page 1 of 4
Test your thinking abilities with these 40 difficult thought provoking logic riddles, these will have you using your brain power.
Logic riddles are hard riddles and may be really hard to solve. We even call them brain teaser riddles. They're really riddles for adults and are difficult riddles. Put on your thinking caps.
1. Cathy has six pairs of black gloves and six pairs of brown gloves in her drawer. In complete darkness, how many gloves must she take from the drawer in order to be sure to get a pair that match? (a left and right glove of the same color) Think carefully!
13. She could possibly take out 6 black left hand gloves and then 6 brown left hand gloves, the next one would have to be either the right hand or left hand match.
2. Mom, Dad, and 2 kids have come to a river, and they find a boat. It is small and can only carry one adult or 2 kids at a time. Both kids are good rowers, but how can the whole family reach the other side of the river?
The kids row across. One comes back. An adult goes over, and the kid comes back. Both kids row across again, and one comes back. The other adult rows across and the kid comes back. Both kids row across again.
3. Why can't you take a picture of a Indian woman with hair curlers?
You can't take a picture with hair curlers, you need a camera.
4. What is the largest possible number you can write using only 2 numbers - just 2 numbers, no other mathematical symbols?
99, this is 9x9x9x9x9x9x9x9x9 or 387,420,489.
5. Before Mt. Everest was discovered, what was the tallest mountain in the world?
Mount Everest has always been the tallest mountain, even before being discovered.
6. Because cigars cannot be entirely smoked, a hobo who collects cigar butts can make a cigar to smoke out of every 5 butts that he finds. Today, he has collected 25 cigar butts. How many cigars will he be able to smoke?
6, he makes 5 originals from the 25 butts he found, and after he smokes them he has 5 butts left for another cigar.
7. Jenn is facetious. She is also abstemious. She gets pneumonia. Given those clues, what American trees will she like?
The Sequoia, the Southern Magnolia, the Russian-Olive and the Euphorbia. She only likes words with all 5 vowels in them.
8. How many birth days does the average man have?
One, he may have many Birthdays, but only one birth day.
9. Someone at a party introduces you to your mother's only sister's husband's sister in law. He has no brothers. What do you call this lady?
Mother, or Mom, or whatever you call your maternal relative.
10. Which weighs more, a pound of feathers or a pound of gold?
The answer is actually feathers. We need proof though. AND SO: From Joni - One pound of feathers is more than one pound of gold because the "pound" unit is different. The most commonly used system of weights in the US and Great Britain is the avoirdupois system, where 1 pound = 16 ounces. This is used for most solid objects, except for precious metals and gems; gold is weighed by a special system, called the troy system, where one troy pound = 12 troy ounces. Where one avoirdupois ounce is 28.35 grams, one troy ounce is about 31.10 grams. To convert from avoirdupois pounds to troy pounds, multiply the first by 1.2152 to get its equivalent in troy measurement. Therefore, one `pound` of feathers in troy weight is actually 1.2152 pounds (one avoirdupois pound), compared to one troy pound of gold. And the feathers win. Thanks Joni.
