Put your reasoning to the test with 150+ logic questions and brain teasers. Think through each problem, reveal the options and check whether your answer holds up.
The first answer that comes to mind is not always the one that fits the question. This collection of 150+ logic questions and brain teasers with answers challenges you to read carefully, work with the information provided and check your assumptions before deciding.
Drawn from quizzes on This Quiz, these questions bring together logical reasoning and mathematical challenges. Take them one at a time, use a pen and paper when you need to, and give yourself space to work out an answer before looking at the options.
You can reveal the available answers and then show the correct one directly on this page. Each question also includes a link to its original quiz if you want to continue with the complete set.
Logic Questions and Brain Teasers with Answers
Read each question carefully and try to solve it before revealing the options. Once you have an answer in mind, show the choices and check which one is correct.
- A die is thrown. Find the probability of a 6.
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- 1/6Correct answer
- 1
- 1/3
Want more questions? Take the full quiz:A teenager should solve this quiz easily. Can you answer all 15 questions? - A farmer had 15 sheep. All but 8 died. How many are left?
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- 8Correct answer
- 15
- 7
- 6
Want more questions? Take the full quiz:Take this LOGIC quiz, if you are feeling smart enough. Only 10% can get more than 11 out of 15 - A father, son, and grandfather walk into a bar. They each order an iced tea. What is the fewest number of iced teas ordered, such that both sentences will be correct?
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- 1Correct answer
- 2
- 3
- 4
Want more questions? Take the full quiz:Are you the smart one among your friends? Take this logic quiz - A grandfather, a father and two sons went hunting, everyone shot a duck, How many ducks did they bring home?
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- 1Correct answer
- 2
- 3
- 4
Want more questions? Take the full quiz:Are you the smart one among your friends? Take this logic quiz - A number plus nine equals three minus two times the number. What is the number?
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- 2
- -2Correct answer
- 7
Want more questions? Take the full quiz:Math and logic quiz. Put your knowledge to the test - A trench can be dug in 6 days by 15 workers. How many days do 45 workers need?
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- 4
- 2Correct answer
- 18
Want more questions? Take the full quiz:IQ Test - Free online IQ test with instant results - a-8, b-27, c-64, (..)
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- d-82
- d-94
- d-125Correct answer
Want more questions? Take the full quiz:Are you as smart as you think you are? Prove it - QUIZ - a, b, d, g, k, __
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- h
- u
- pCorrect answer
- z
Want more questions? Take the full quiz:Logic Questions Quiz: Can You Score 15/15? - a, c, e, g, i (...)
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- j
- kCorrect answer
- l
Want more questions? Take the full quiz:Are you as smart as you think you are? Prove it - QUIZ - a, f, j, m, o, __
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- l
- pCorrect answer
- q
- r
Want more questions? Take the full quiz:Logic Questions Quiz: Can You Score 15/15? - After each day, you get one less than twice as many dollars as you got the day before. You get one dollar on March 26, so how many dollars did you get on March 21?
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- 22
- 1Correct answer
- 2
- 3
Want more questions? Take the full quiz:Take this LOGIC quiz, if you are feeling smart enough. Only 10% can get more than 11 out of 15 - Alejandro bought three quarters of kilo of several fruits and used half a kilo to prepare a cocktail. How much fruit did he have left?
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- 1/6
- 1/5
- 1/4Correct answer
Want more questions? Take the full quiz:Math and logic quiz. Put your knowledge to the test - All right! and the gcd of 33, 77 and 121?
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- 11Correct answer
- 12
- 20
Want more questions? Take the full quiz:Greatest Common Divisor. Do you know how to calculate it? [QUIZ] - 18 and 24?
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- 6Correct answer
- 18
- 24
Want more questions? Take the full quiz:Greatest Common Divisor. Do you know how to calculate it? [QUIZ] - 16, 24 and 40 have as gcd:
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- 8Correct answer
- 2
- 4
Want more questions? Take the full quiz:Greatest Common Divisor. Do you know how to calculate it? [QUIZ] - Andrea and Blanca walk every day. If Andrea walks 2/5 km, then 2/5 km more; and Blanca walks 5/7 km, then 1/7 km more, who walks more?
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- BlancaCorrect answer
- Andrea
Want more questions? Take the full quiz:Math and logic quiz. Put your knowledge to the test - Area of a triangle of height 5 cm and base 8 cm:
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- 20 cm ^ 2Correct answer
- 40 cm ^ 2
Want more questions? Take the full quiz:Math and logic quiz. Put your knowledge to the test - Before Mt. Everest was discovered, what was the tallest mountain in the world?
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- Mount Fuji
- Mount Olympus
- Mount Sherlock
- Mount KangchenjungaCorrect answer
Want more questions? Take the full quiz:Are you smart enough to answer all 15 questions of this LOGIC quiz? Average score is... 8/15 - Before Mt. Everst was discovered, which was the tallest mountain?
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- Mt. K2
- Mt. Olympus
- Mt. EverestCorrect answer
- Mt. Kilimanjaro
Want more questions? Take the full quiz:Are you the smart one among your friends? Take this logic quiz - Betty and Elba shared a watermelon and a half. If Betty took 3/4 of the fruit, how much fruit did Elba have left?
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- 1/2
- 3/2
- 3/4Correct answer
Want more questions? Take the full quiz:Math and logic quiz. Put your knowledge to the test - Beyonce fans like Taylor Swift, Taylor Swift fans like Nicki Minaj. Hence, are Beyonce fans also Minaj's fans?
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- Yes
- NoCorrect answer
- They are fans of theater
- They are fans of the cinema
Want more questions? Take the full quiz:Take this LOGIC quiz, if you are feeling smart enough. Only 10% can get more than 11 out of 15 - Celiac disease is an immune reaction to the ingestion of:
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- GlutenCorrect answer
- Vegetables
Want more questions? Take the full quiz:20 simple general knowledge quiz questions. Can you score 20/20? - Choose a word which is antonym of: Ameliorate
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- marCorrect answer
- west
- stuff
- fade
Want more questions? Take the full quiz:Scoring more than 10/15 in this simple English test is really tough. Are you one of the fluent English speakers who know what's the right use of words? - Choose the best suited word: "The ruling part found itself in full ____ with the opposition.
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- swing
- record
- accordCorrect answer
- discord
Want more questions? Take the full quiz:Scoring more than 10/15 in this simple English test is really tough. Are you one of the fluent English speakers who know what's the right use of words? - Choose the correct transition word, and adjective: " ____ the general had been told by the field staff that continuing warfare would be ___ to his soldiers, he insisted on deploying more battle tanks."
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- Although, detrimentalCorrect answer
- Although, formidable
- Because, immediate
- Because, instrumental
Want more questions? Take the full quiz:Scoring more than 10/15 in this simple English test is really tough. Are you one of the fluent English speakers who know what's the right use of words? - Choose the correct word: His opinion ____ with the complaints we have received from others.
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- concursCorrect answer
- tallies
- asserts
- assimilates
Want more questions? Take the full quiz:Scoring more than 10/15 in this simple English test is really tough. Are you one of the fluent English speakers who know what's the right use of words? - Choose the number which is different from others in the group
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- 263
- 111
- 242
- 383Correct answer
Want more questions? Take the full quiz:Are you the smart one among your friends? Take this logic quiz - Choose the sentence without any spelling mistakes:
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- You would take less time than my broter.
- You would take les time than my brother.
- You would take less time than my brother.Correct answer
Want more questions? Take the full quiz:IQ Test - Free online IQ test with instant results - Choose the word which is least like the other words in the group.
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- Chameleon
- Crocodile
- Snake
- LocustCorrect answer
Want more questions? Take the full quiz:Are you the smart one among your friends? Take this logic quiz - Complete the sentence with the right word: He was the most _____ person I had ever met; in fact, his magnanimity knew no limits.
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- Merciful
- CharitableCorrect answer
- Reclusive
- Prolific
Want more questions? Take the full quiz:Scoring more than 10/15 in this simple English test is really tough. Are you one of the fluent English speakers who know what's the right use of words? - Croaking is to frogs like:
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- Mooing is to bears.
- Laughing is to humans.
- Squawking is to geese.Correct answer
Want more questions? Take the full quiz:IQ Test - Free online IQ test with instant results - Dave’s parents had 5 sons. Their names are Dab, Deb, Dib, and Dod. What was the fifth child’s name?
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- DaveCorrect answer
- Deb
- Ditto
- Dub
Want more questions? Take the full quiz:Are you smart enough to answer all 15 questions of this LOGIC quiz? Average score is... 8/15 - Divergent is the opposite of:
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- Immune
- UnanimousCorrect answer
- Equanimous
Want more questions? Take the full quiz:IQ Test - Free online IQ test with instant results - 5 dogs eat 5 chewing bones in 5 minutes. 200 dogs eat 200 chewing bones in how many minutes?
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- 5Correct answer
- 100
- 200
- None of the above
Want more questions? Take the full quiz:Are you smart enough to answer all 15 questions of this LOGIC quiz? Average score is... 8/15 - 'Duke' is the mascot of which of these brands?
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- JavaCorrect answer
- JavaScript
- Dojo
- Ada
Want more questions? Take the full quiz:Only 1 in 50 programmers can score a perfect score. Are you the one? - Eliminate the signs and solve. 1 + (4 - 7) - (- 6 - 2) - 8 =?
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- -8
- -2Correct answer
- 10
Want more questions? Take the full quiz:Math and logic quiz. Put your knowledge to the test - Engineering is associated with:
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- Technology, industry, science, service, ingenuity.Correct answer
- Sharpness, mechanism, lyricism, property, calculation.
- Expertise, ability, production, registration, mathematics.
Want more questions? Take the full quiz:IQ Test - Free online IQ test with instant results - Express this number in scientific notation. 0.00023 =?
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- 2.3 x 10 ^ -3
- 2.3 x 10 ^ -4Correct answer
Want more questions? Take the full quiz:Math and logic quiz. Put your knowledge to the test - Find the misspelled word:
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- Going
- FalingCorrect answer
- Bringing
Want more questions? Take the full quiz:IQ Test - Free online IQ test with instant results - Find the next number in the sequence: 15, 31, 63, 127, 255.
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- 110
- 170
- 511Correct answer
- 181
Want more questions? Take the full quiz:Are you the smart one among your friends? Take this logic quiz - Find the value of z if the average of four values: 1; 0.8; 0.2 and Z is 0.6
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- 0.2
- 0.4Correct answer
- 1.4
Want more questions? Take the full quiz:Can you pass this math quiz? 9 in 10 people can't score over 10/15 - Following the rules of symbolic logic. The contradiction of "no elephant is forgetful" is:
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- No elephant is forgetful.
- Some elephants are forgetful.Correct answer
- All elephants are forgetful.
Want more questions? Take the full quiz:A teenager should solve this quiz easily. Can you answer all 15 questions? - Four people are suspected of stealing a diamond from a museum. each make two statements. If one of their statements is true, and one is false, who is the thief?... Bo said: It was Bo. It wasn't Roman... Roman said: It was Kate. It wasn't Bo... John said: It was Roman. It wasn't Kate... Kate said: It was John. It was Bo.
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- Kate
- JohnCorrect answer
- Bo
- Roman
Want more questions? Take the full quiz:Take this LOGIC quiz, if you are feeling smart enough. Only 10% can get more than 11 out of 15 - gcd of 7, 14 and 21
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- 21
- 14
- 7Correct answer
Want more questions? Take the full quiz:Greatest Common Divisor. Do you know how to calculate it? [QUIZ] - gcd of 20, 28, 36 and 40
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- 2
- 4Correct answer
- 8
Want more questions? Take the full quiz:Greatest Common Divisor. Do you know how to calculate it? [QUIZ] - gcd of 144 and 520.
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- 2
- 4
- 8Correct answer
Want more questions? Take the full quiz:Greatest Common Divisor. Do you know how to calculate it? [QUIZ] - Given the premises: "every pirate is a bandit" and "every buccaneer is a pirate" then it can be concluded that: (according to symbolic logic)
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- Every pirate is a buccaneer.
- Every buccaneer is a bandit.Correct answer
- Every bandit is a buccaneer.
Want more questions? Take the full quiz:A teenager should solve this quiz easily. Can you answer all 15 questions? - Here's an easy one, where do you find a tree's root?
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- At the very topCorrect answer
- At the bottom of it
- Center
Want more questions? Take the full quiz:Only 1 in 50 programmers can score a perfect score. Are you the one? - How can you represent this sentence? In a conference of 43 people there are 10 times more smartphones than tablets
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- T = 10S
- S = 10TCorrect answer
- T = S + 10
Want more questions? Take the full quiz:Can you pass this math quiz? 9 in 10 people can't score over 10/15 - How does the saying go? «If you pay peanuts, ...»
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- The good workers leave.
- You earn more.
- You get monkeys.Correct answer
Want more questions? Take the full quiz:15 general knowledge questions and answers
How to Approach a Logic Question
Start by separating what the question tells you from what you are assuming. A detail that seems obvious may not actually be stated, while a small qualification can change which answer works.
For a mathematical problem, write down the quantities and check each step. For a reasoning question, test your proposed answer against every condition. Before revealing the solution, ask yourself whether you have answered the exact question being asked.
Try the Brain Teasers Without Multiple-Choice Hints
Keeping the options hidden changes the challenge. Instead of recognising a likely answer, you have to produce one yourself. Write down your answer and a short reason for choosing it, then reveal the options.
If your answer differs from the correct one, reread the question and look for the point where your reasoning changed direction. You may have missed a condition, made a calculation error or added an assumption that the question did not support.
Solve the Questions with Friends
Choose a short set and let everyone work independently before revealing the answers. Compare your reasoning as well as your final choices: two people can arrive at the same answer by very different routes.
For a simple scoring system, award one point per correct answer and keep your own total. Agree beforehand whether players can see the multiple-choice options.
Explore More Logic Quizzes
Follow the link beside a question to try its original quiz, or browse our logic and brain teaser quizzes for your next challenge.
