Logic Puzzles

All 62 Logic Puzzles

• #1 DUMMY The letters from the three words below can be taken apart, unscrambled and merged to form three separate words all of which are synonyms. Can you find them? CLIMBER MONITOR N...
• #2 Unscramble The king of conundrums lives in the MANLIEST CAGE
• #3 Something Fishy!? How long does it take for you to solve weird riddles? Time is passing as we speak...tic...toc! This one involves absolutely no academia. If you don't solve it you...
• #4 SO! What color is her blouse?
• #5 Below there are sixteen numbers. Assuming that any three of the numbers may be drawn at random, what is the probability (to the nearest percent) that three numbers will be drawn wh...
• #6 Judy is five times as old as Henry. In two years, she'll be three times as old, and in six years she'll only be twice as old. How old will Judy be in seven years?
• #7 ETS Which one is the odd one out? URN URA ARS RTH TER NUS
• #8 LET'S SPLIT Maxwell Edison is studying a newly discovered hyperactive amoeba which multiplies at a highly accelerated rate. He places one such amoeba in a jar. After 15 seconds the...
• #9 GOOD SAMARITAN 463512=a divine service and 3/8 of me is a system or theory. What am I?
• #10 Below there are 36 numbers. Assuming that any three of the numbers may be drawn at random, what is the probability (to the nearest percent) that three numbers will be drawn whose s...
• #11 Orgm lif sca means "work all day." Habba sca flib means "car does work." Flib clop orgm means "all she does." What words would you use to say: "Does she work?" The order that you p...
• #12 There are 2 identical strings. If you light one of the strings at its end, it will take exactly one hour for it to finish burning completely. The string will not burn evenly - it i...
• #13 You would cook a meal.
• #14 You would get paid.
• #15 You would get married.
• #16 It would be unusually bright.
• #17 If there are 4 empty seats in a movie theatre, how many permutations are there for the number of ways 4 people could sit in these seats?
• #18 There are 10 socks of each of the following colors in a drawer: blue, green, red, yellow & white, for a total of 50 socks. If the socks are randomly distributed in the drawer (i.e....
• #19 If you are in the same situation as in the preceding problem, how many socks must you draw from the drawer in order to be certain you have at least 2 socks of different colors?
• #20 If none of the following statements are true, who can we conclude broke the vase? Mike: Sally broke the vase. Tom: Mike will tell you who broke the vase. April: Tom, Mike & I could...
• #21 Make a word from boas that can be used to keep you clean.
• #22 A man & his family lay out blankets & lie down, watching the sky for hours, even though explosions can be heard nearby. Why? Hint: The date is important.
• #23 A woman steps to the edge of a very high building, & as people look on, she leaps off, & falls several stories. The woman is not injured. Why? Hint: The woman did not fall on cushi...
• #24 A man leaves home one night & drives over a mile to meet a friend for a drink. When the man arrives home, the clock shows a time only five minutes later than when he left. How is t...
• #25 A boy enters a room that is filled with adults. He is told by a man that the court has found that his parents have neglected & abused him, & he will be placed in foster care. Howev...
• #26 Three men enter a room filled with gas wearing gas masks. The men voluntarily remove their masks, & begin coughing heavily because of the gas. They do not put their masks back on. ...
• #27 Spike, an adult, brings the paper to Mr. Hopkins every day. Spike is never paid for this. Why does he do this? Hint: Spike does not have to bring the paper, but he does not do it e...
• #28 Toby is celebrating his birthday with his friends & family at a restaurant. "I'd like to have a beer - the best you've got! Today is my sixteenth birthday," Toby says to the waiter...
• #29 A woman bets her friends that she can grab the bare wire on a high voltage electric cable & not be injured. How could she possibly do this? Hint: Electricity of extremely high volt...
• #30 The fastest runner in school bets a much slower runner that he can beat him in a sprint to a point that is 100 yards away from them. After considering for a minute, the slower runn...
• #31 Mark's friends & family throw a surprise party for him. Mark is divorced a few months after the party. Why? Hint: The party was in a town in which Mark does not live.
• #32 Two trains, each two miles long, enter two one mile long tunnels that are two miles apart from one another on the same track. The trains enter the tunnels at exactly the same time....
• #33 You have a box that fits inside of a box that fits inside of a box that fits inside of a box that fits inside of a box, for a total of 5 boxes. Assume that no two boxes can fit ins...
• #34 Solve the preceding problem for 6 boxes.
• #35 If the same functions are applied to reach the results in each of the three sets of numbers, find what number should replace the ? in the last set: 21 5 28 13 16 2 24 30 ? 17 7 25 ...
• #36 You have 1,432 feet of fence that must be strung out in a straight line. A fence post must be placed for every 4 feet of fence, so how many fence posts will be needed?
• #37 If you take 7, then 17, & then 8 from me, you have 160. But if you take 6, then 17, then 8 from me, you have 170. Finally, if you take 1, then 4, then 1 from me, you have 762. What...
• #38 For each of the following equations, letters have been substituted for the numbers. This substitution is consistent throughout all 4 of the equations. Determine what number (from 0...
• #39 I281B4 Determine which of the following letters & numbers completes the sequence above: S 0 V Q U 22
• #40 Without writing anything or using any calculating device, tell me if there are more 2s or 8s to be found in all of the numbers from 1 to 50,000.
• #41 If 2 of the following statements are false, what chance is there that the egg came first? Round to the nearest whole percent. Note: If any part of a statement is false, then the en...
• #42 If everyone in Chinaville owns an even number of dishes, no one owns more than 274 dishes, & no 2 people own the same number of dishes, what is the maximum number of people in Chin...
• #43 Determine which of the following words does not belong: peck rod feed grain gill
• #44 If each letter in the following equations represents a number from 1 through 9, determine what number each letter represents. A. A+A+B+C = 13 B. A+B+C+D = 14 C. B+B+C+D = 13
• #45 Should the letter I be on the top or bottom row? A H J K B C D E F G L M N O P Q R S T U V W X Y Z
• #46 Complete each of the following statements by filling in each ____ with a word. Don't use reference materials on this one! A. New York is the big ____ B. An ____ a day keeps the doc...
• #47 A little girl is in Missouri, & her mother is in California. The little girl is in an accident, & has to be rushed to a nearby hospital. The little girl is the daughter of the nurs...
• #48 You have 8 marbles that weigh 1 ounce each, & 1 marble that weighs 1.5 ounces. You are unable to determine which is the heavier marble by looking at them. You have a weighing scale...
• #49 A group of 4 people, Andy, Brenda, Carl, & Dana, arrive in a car near a friend's house, who is having a large party. It is raining heavily, & the group was forced to park around th...
• #50 You are in a room with 2 doors leading out. Behind 1 door is a coffer overflowing with jewels & gold, along with an exit. Behind the other door is an enormous, hungry lion that wil...
• #51 You & I come across 3 people, & each 1 is a knight, knave, or normal (normals sometimes tell the truth, & sometimes lie). Exactly 1 of them is a knight, 1 of them is a knave, & the...
• #52 Four individuals made the following statements, & each 1 is a knight or a knave. Which ones are knaves, if any? A. Hydroponics is a science that deals with fisheries. B. D always t...
• #53 If you added together the number of 2's in each of the following sets of numbers, which set would contain the most 2's: 1-333, 334-666, or 667-999?
• #54 You have 3 baskets, & each 1 contains exactly 4 balls, each of which is of the same size. Each ball is either red, black, white, or purple, & there is 1 of each color in each baske...
• #55 8 kips & 14 ligs can build 510 tors in 10 hours, & 13 kips & 6 ligs can build 492 tors in 12 hours. At what rates do kips & ligs build tors? Express your answers in tors per hour.
• #56 If a juggler juggles 4 objects, how many total throws must he or she make before the objects are returned to their original positions (i.e. the original 2 objects in each hand)? Th...
• #57 A poor man wanted to smoke cigarettes, but did not have enough money to buy them. He found that if he collected cigarette butts, he could make a cigarette from every 5 butts found....
• #58 Having just picked some apples from my tree, I placed them in a basket, & took them around to my friends. I ate one, & then gave a third of the remaining apples to my friend Mike. ...
• #59 A man and his son were in an automobile accident. The man died in the accident, but his son was rushed to the hospital. Fortunately, the boy was saved by the doctor who operated on...
• #60 In a certain lottery, thirty balls, each one numbered 1, 2, 3......30 are placed in a basket. The basket is shaken, and 5 of the balls are randomly drawn from the basket, and set s...
• #61 Andy, Brian, Cedric, and Dave are an architect, a barber, a caseworker, and a dentist, but not necessarily in that order. Given the following facts, determine what each man's occup...
• #62 Three men make the following statements regarding a murder that they are suspected of. Two of the men are lying, & one of them is telling the truth. Exactly one of the men is guilt...