100+ Brain Teaser IQ Questions and Answers

Brain teaser IQ Questions

Brain teaser IQ questions are a mix of puzzles and questions that require mental effort to solve. Brain teasers refresh the mind, preparing it to grasp new information effectively. Sharpening your critical skills can help in memory retention, quicker pace in solving problems, etc.

What are the Benefits of Brain Teaser IQ Questions?

Brain teaser IQ questions offer numerous benefits. They are:

  • Enhance Cognitive Ability
  • Train the minds to think quick
  • Builds Troubleshooting Skills
  • Helps the brain relax

You can further understand how to interpret IQ stores to make sure you are on the right track.

Now, let’s tackle those questions.

100 + Mixed Brain Teaser IQ Questions

  1. A snail climbs 3 feet during the day but slips 2 feet at night. How many days will it take to climb a 30-foot wall?

Options:

a) 30 days
b) 28 days
c) 31 days
d) 20 days

Answer: 28 days
  1. A clock strikes once at 1:00, twice at 2:00, and so on. How many times does it strike in a day?

Options:

a) 150 times
b) 200 times
c) 156 times
d) 160 times

Answer: 156 times
  1. What’s the 10th number in the Fibonacci sequence?

Options:

a) 34
b) 55
c) 30
d) 15

Answer: 34
  1. What comes next: 1, 4, 9, 16, 25, __?

Options:

a) 36
b) 144
c) 20
d) 30

Answer: 36
  1. A man builds a house with all four sides facing south. What color is the bear nearby?

Options:

a) Black
b) White
c) Orange
d) Blue

Answer: White
  1. A person who loves mankind

Options:

a) Philanthropist
b) Misogynist
c) Egoist
d) Narcissist

Answer: Philanthropist
  1. Identify the missing number: 2, 3, 5, 8, 12, __.

Options:

a) 0
b) 10
c) 17
d) 12

Answer: 17
  1. Rearrange the letters in “NEW DOOR” to make one word.

Options:

a) Wonder
b) Won
c) Done
d) One word

Answer: One Word
  1. A rooster lays an egg on a slanted barn roof. Which way does it roll?
It doesn't roll through either of the way. A rooster doesn't lay eggs.
  1. The study of human societies and cultures

Options:

a) Archaeology
b) Anthropology
c) Sociology
d) Psychology

Answer: Anthropology
  1. 3, 6, 11, 18, __?

Options:

a) 19
b) 27
c) 10
d) 20

Answer: 27
  1. A train leaves the station at 1 PM traveling at 60 mph. Another train leaves at 2 PM traveling at 80 mph. At what time will they meet?

Options:

a) 3:00 PM
b) 2:00 PM
c) 12:00 PM
d) 1:00 AM

Answer: 3:00 PM
  1. What five-letter word becomes shorter when you add two letters to it?
Answer: Shorter
  1. What letter comes next: A, C, F, J, __?

Options:

a) P
b) O
c) K
d) L

Answer: O
  1. A government by the wealthy

Options:

a) Aristocracy
b) Monarchy
c) Plutocracy
d) Oligarchy

Answer: Plutocracy
  1. Find the antonym of the following word from options.

RELINQUISH

Options:

a) Possess
b) Deny
c) Abscond
d) Abdicate

Answer: Possess
  1. Two fathers and two sons catch three fish. Each person gets one. How?
Answer: They are Grandfather, Son and Grand Son.
  1. If a plane crashes on the border of two countries, where are the survivors buried?
Answer: Survivors won't be buried.
  1. Spot the odd one out: 2, 4, 8, 32, 64.

Options:

a) 4
b) 2
c) 32
d) 64

Answer: 32
  1. 10, 20, 15, 25, __?

Options:

a) 30
b) 15
c) 20
d) 10

Answer: 20
  1. The sum of three consecutive integers is 90. What are the integers?
Answer: 29,30, and 31.
  1. Find the antonym for the following word.

FRAUDULENT

Options:

a) Fraud
b) Genuine
c) Real
d) Non-fraud

Answer: Genuine
  1. What comes next in the series: 3, 8, 18, 34, 66, __?

Options:

a) 150
b) 130
c) 132
d) 122

Answer: 130
  1. What comes next in the series: 12, 21, 32, 23, 34, __?

Options:

a) 36
b) 38
c) 43
d) 40

Answer: 43
  1. A person who eats too much

a) Obese
b) Glutton
c) Poverty
d) Epicure

Answer: Glutton
  1. The man who invented it doesn’t want it, the man who bought it doesn’t need it, and the man who uses it doesn’t know it. What is it?
Answer: Coffin
  1. If a snail moves 3 cm in one minute and then rests for 2 minutes, how far will it go in 15 minutes?

Options:

a) 12cm
b) 10cm
c) 15cm
d) 20cm

Answer: 15cm
  1. A man is 30 years old and his son is 5. How many years ago was the man six times as old as his son?

Options:

a) 10 years
b) 15 years
c) 8 years
d) 5 years

Answer: 10 years
  1. Find the synonym of the following word:

LAMENT

Options:

a) Complain
b) Opinion
c) Cry
d) Condone

Answer: Complain
  1. A farmer has 17 sheep. All but 9 run away. How many are left?

Options:

a) 17
b) 0
c) 9
d) 2

Answer: 9
  1. Double a number, add 10, then divide by 2, and subtract 5. You get the same number. What is it?

Options:

a) 10
b) 5
c) 2
d) 4

Answer: 5
  1. What comes next: A2, C4, E8, G16, __?

Options:

a) 30
b) 32
c) 31
d) 22

Answer: 32
  1. I am a three-digit number. My tens digit is five more than my ones digit, and my hundreds digit is eight less than my tens digit. What am I?

Options:

a) 194
b) 283
c) 382
d) 155

Answer: 194
  1. Find the synonym of the following word:

RECKLESS

Options:

a) Courageous
b) Rash
c) Bold
d) Daring

Answer: Rash
  1. What comes next: 1, 2, 6, 24, 120, __?

Options:

a) 350
b) 600
c) 720
d) 140

Answer: 720
  1. Complete the pattern: 2, 3, 5, 7, 11, __.

Options:

a) 13
b) 15
c) 16
d) 12

Answer: 13
  1. How many times can you subtract 10 from 100?
Answer: One time.
  1. I add five to nine and get two. The answer is correct, but how?
Answer: It’s a clock: 9 o’clock + 5 hours = 2 o’clock.
  1. A woman shoots her husband, holds him underwater for several minutes, and then hangs him. Yet, shortly after, they are seen dining together happily. How is this possible?
Answer: She shot his photograph, developed it and hung it to dry.
  1. Divide 30 by ½ and add 10. What’s the answer?

Options:

a) 25
b) 35
c) 70
d) 20

Answer: 70
  1. What number do you get when you multiply all the numbers on a telephone dial?

Options:

a) 362280
b) 468828
c) 0
d) None of the above

Answer: 0
  1. Forward, I am heavy. Backward, I am not. What am I?
Answer: Ton
  1. Five friends sit in a row. If Sarah is to the left of John and John is to the right of Mike, who is in the middle?
Answer: Mike
  1. If two coins are tossed, what is the probability of getting at least one head?

Options:

a) 1/4
b) 1/2
c) 3/4
d) 1

Answer: 3/4
  1. The statement has a jumbled word. Read the sentence and find the right word from the options.
    She DEGILD the ice floor like a pro.

Options:

a) GILDED
b) GLIDED
c) LIDEDG
d) GLEIDD

Answer: GLIDED
  1. Find the synonym of the following word.

STERILE

Options:

a) Filter
b) Barren
c) Fertile
d) Barren

Answer: Barren
  1. A person who compiles dictionaries

Options:

a) Cartographer
b) Lexicographer
c) Biographer
d) Geographer

Answer: Lexicographer
  1. An accurate clock reads 8:00 AM. By how many degrees will the hour hand have turned when it reaches 2:00 PM?

Options:

a) 144 degrees
b) 180 degrees
c) 90 degrees
d) 170 degrees

Answer: 180 degrees
  1. Spot the odd one out:

8,27,100,64,125,512

Options:

a) 64
b) 512
c) 100
d) 8

Answer: 100
  1. The seats for Mathematics, Physics, and Biology in a school are in the ratio 5:7:8. If the proposal to increase these seats by 40%, 50%, and 75%, respectively, is implemented, what will the new ratio of seats be?

Options:

a) 6:7:8
b) 2:3:4
c) 1:3:2
d) 5:4:8

Answer: 2:3:4
  1. A place where coins are made

a) Factory
b) Mint
c) Foundry
d) Mill

Answer: Mint
  1. Find the synonym of the following word:

Nimble

Options:

a) Quickening
b) Clear
c) Unrhythmic
d) Lively

Answer: Quickening
  1. If 1/3 of 1/4 of a number is 15, then what is 3/10 of that number?

Options:

a) 63
b) 54
c) 100
d) 25

Answer: 54
  1. A two-digit number differs from the number formed by reversing its digits by 36. What is the difference between the digits of the original number?

Options:

a) 3
b) 2
c) 4
d) Cannot be determined

Answer: 4
  1. Quart is to ounce as yard is to

Options:

a) Inch
b) Centimeter
c) Liter
d) Gallon

Answer: Inch
  1. The total age of five children, each born 3 years apart, is 50 years. How old is the youngest child?

Options:

a) 8 years
b) 10 years
c) 4 years
d) None of the above

Answer: 4 years
  1. Mutton:Sheep::

Options:

a) Pork: Pig
b) Lobster: Crustacean
c) Chick: Chicken
d) Prawn: Curry

Answer: Pork:Pig
  1. January 1, 2006, fell on a Sunday. What day of the week was January 1, 2010?

Options:

a) Monday
b) Tuesday
c) Sunday
d) Friday

Answer: Friday
  1. Find the correct spelling

Options:

a) Benefited
b) Benefitted
c) Benifited
d) Benefeted

Answer: Benefited
  1. A train 130 meters long, traveling at 45 km/h, crosses a bridge in 30 seconds. What is the length of the bridge?

Options:

a) 200m
b) 245m
c) 300m
d) 350m

Answer: 245m
  1. That which cannot be believed

Options:

a) Incredible
b) Inevitable
c) Indelible
d) Infamous

Answer: Incredible
  1. A vessel contains a liquid mixture with a ratio of 3 parts water to 5 parts syrup. How much of this mixture should be removed and replaced with water to make the mixture consist of equal parts water and syrup?

Options:

a) 1/3
b) 3/4
c) 2/3
d) 1/5

Answer: 1/5
  1. Find the antonym for the word.

Commissioned

Options:

a) Finished
b) Terminated
c) Closed
d) Started

Answer: Terminated
  1. Two students took an examination. One scored 9 marks more than the other, and his marks were 56% of the total marks scored by both. What were their individual marks?

Options:

a) 42,33
b) 30,35
c) 41,32
d) 39,30

Answer: 42,33
  1. When someone is arrogant and domineering

Options:

a) Haughty
b) Insolent
c) Imperious
d) Impressive

Answer: Imperious
  1. A can contains a mixture of two liquids A and B is in the ratio 7 : 5. When 9 liters of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7 : 9. How many liters of liquid A was contained by the can initially?

Options:

a) 20
b) 21
c) 25
d) 30

Answer: 21
  1. Find the synonym for the word:

Brief

Options:

a) Short
b) Limited
c) Lean
d) Small

Answer: Short
  1. A family has two grandparents, two parents, and three grandchildren. The grandparents have an average age of 67 years, the parents have an average age of 35 years, and the grandchildren have an average age of 6 years. What is the overall average age of the family?

Options:

a) 32 1/7 years
b) 31 5/7 years
c) 10 years
d) None of the above

Answer: 31 5/7 years
  1. The philosophical theory of existence

Options:

a) Existentialism
b) Syllogism
c) Fascism
d) Communalism

Answer: Existentialism
  1. In a school, 20% of the students are younger than 8 years. The number of students older than 8 years is three times the number of students who are exactly 8 years old, which is 48. What is the total number of students in the school?

Options:

a) 90
b) 80
c) 100
d) 60

Answer: 100
  1. The average weight of a group of 8 people increases by 2.5 kg when one of the group members, who weighs 65 kg, is replaced by a new person. What is the weight of the new person?

Options:

a) 75kg
b) 80kg
c) 80.5kg
d) 85kg

Answer: 85kg
  1. A small amount of something

Options:

a) Enormous
b) Huge
c) Smattering
d) Jot

Answer: Smattering
  1. In an election with two candidates, one candidate received 55% of the total valid votes. If 20% of the votes were invalid and the total number of votes cast was 7500, how many valid votes did the other candidate receive?

Options:

a) 3500
b) 2500
c) 3700
d) 2700

Answer: 2700
  1. The price of Type 1 rice is Rs. 15 per kg, and Type 2 rice is Rs. 20 per kg. If these two types are mixed in the ratio of 2:3, what will be the cost per kg of the resulting mixture?

Options:

a) 18
b) 18.50
c) 80
d) 100

Answer: 18

75. The study of past human activity through material remains

Options:

a) Anthropology
b) Archaeology
c) Zoology
d) Architectural

Answer: Archaeology
  1. Gauri purchased items worth Rs. 25 from a stationery shop, out of which 30 paise was paid as sales tax on taxable items. If the tax rate was 6%, what was the cost of the tax-free items she bought?

Options:

a) 17.90
b) 19.70
c) 18
d) 19

Answer: 19.70
  1. Two trains of the same length are moving on parallel tracks in the same direction at speeds of 46 km/h and 36 km/h, respectively. The faster train overtakes the slower train in 36 seconds. What is the length of each train?

Options:

a) 72m
b) 50m
c) 70m
d) 60m

Answer: 50m
  1. How many kilograms of sugar priced at Rs. 9 per kg need to be mixed with 27 kg of sugar priced at Rs. 7 per kg so that selling the mixture at Rs. 9.24 per kg results in a 10% profit?

Options:

a) 50kg
b) 63kg
c) 60kg
d) 73kg

Answer: 63kg
  1. To formally put an end to a system, law, or practice

Options:

a) Abolish
b) Exonerate
c) Admonish
d) Acquiesce

Answer: Abolish
  1. To strongly criticize someone or something

s) Eulogize
b) Lambaste
c) Appraise
d) Comment

Answer: Lambaste
  1. A boat takes 8 hours and 48 minutes to travel a certain distance upstream and 4 hours to travel the same distance downstream. What is the ratio of the speed of the boat to the speed of the current?

Options:

a) 8:3
b) 3:2
c) 1:2
d) None of the above

Answer: 8:3
  1. In one hour, a boat travels at 11 km/h with the stream and 5 km/h against the stream. What is the speed of the boat in still water (in km/h)?

Options:

a) 3km/h
b) 2km/h
c) 8km/h
d) 9km/h

Answer: 8km/h
  1. To confirm or give support to a statement, theory, or finding

a) Corroborate
b) Contradict
c) Repudiate
d) Subvert

Answer: Corroborate
  1. To publicly declare someone free from blame or guilt

a) Exonerate
b) Vindicate
c) Reprimand
d) Condemn

Answer: Exonerate
  1. Teacher:Student::Doctor:

Options:

a) Patient
b) Nurse
c) Assistant
d) None of the above

Answer: Patient
  1. What is the largest four-digit number that is exactly divisible by 88?

Options:

a) 9944
b) 9988
c) 10088
d) 8888

Answer: 9944
  1. The difference between the two numbers is 1365. When the larger number is divided by the smaller, the quotient is 6, and the remainder is 15. What is the value of the smaller number?

Option:

a) 250
b) 370
c) 270
d) 300

Answer: 270
  1. To avoid something deliberately

a) Emulate
b) Shun
c) Compel
d) Retort

Answer: Shun
  1. She has an insatiable love for food:

Options:

a) Undesirable
b) Unsatisfiable
c) Unchanging
d) Irrevocable

Answer: Unsatisfiable
  1. What is the sum of the first 45 natural numbers?

Options:

a) 1280
b) 1035
c) 1550
d) 1350

Answer: 1035
  1. The difference between a positive proper fraction and its reciprocal is 9/20. What is the fraction?

Options:

a) 4/3
b) 4/5
c) 3/10
d) 3/5

Answer: 4/5
  1. A person who honorably discharged from service

Options:

a) Emancipated
b) Retired
c) Emeritus
d) Relieved

Answer: Emeritus
  1. Having intellectual tastes

Options:

a) Aristocratic
b) Sophisticated
c) Highbrow
d) Elite

Answer: Highbrow
  1. Complete the series:

2, 6, 18, 54, …

Options:

a) 148
b) 100
c) 122
d) 162

Answer: 162
  1. Complete the series:

5.2,4.8,4.4,4

Options:

a) 3
b) 2.5
c) 3.6
d) 3.5

Answer: 3.6
  1. What five-letter word stays the same when you take away the first, third, and last letters?
Answer: EMPTY
  1. The current ages of Sameer and Anand are in the ratio of 5:4. After three years, the ratio of their ages will change to 11:9. What is Anand’s current age in years?

Options:

a) 27
b) 24
c) 30
d) 50

Answers: 24
  1. A person having good knowledge and reasoning

Options:

a) Intelligent
b) Expert
c) Intellectual
d) Snob

Answer: Intellectual
  1. Prima Facie means

Option:

a) As it seems at first sight
b) As it is made to seem at first sight
c) As it turns out to be at the end
d) As it seems to the court after a number of hearings

Answer: As it seems at first sight
  1. Thirty-nine people can repair a road in 12 days, working 5 hours per day. How many days will it take for 30 people, working 6 hours per day, to complete the same work?

Options:

a) 10
b) 12
c) 13
d) None of the above

Answer: 13
  1. A camp has food sufficient for either 120 men or 200 children. If 150 children have already had their meal, how many men can be served with the remaining food?

Options:

a) 20 men
b) 30 men
c) 40 men
d) 50 men

Answer: 30 men

Summary

Brain teaser IQ questions are great for stimulating brain function, and regular practice can significantly improve your score. Strong cognitive abilities are crucial for success in job searches and competitive exams. Best of luck!

FAQs

  1. What are IQ questions?

IQ test questions are designed to assess a person’s cognitive abilities. These tests provide insights into how individuals solve problems on the spot and are often used in competitive exams or to evaluate job applicants.

  1. What is the importance of IQ Test Questions in job candidate selection?

Employers commonly use IQ tests to screen candidates before advancing them to technical interview stages. These questions provide insights into a candidate’s critical thinking and analytical abilities, making them an effective tool for assessing potential.

  1. What are the different kinds of tests that come under IQ questions?

The different types of questions that come under IQ questions like numerical aptitude, verbal reasoning, pattern recognition, anagrams, etc.

  1. Are IQ questions the sole test to determine the quality of the job candidate?

IQ tests can assess analytical and cognitive skills but don’t give the full picture of a potential candidate. Creativity and practical skills can’t be fully evaluated by IQ tests. In conclusion, IQ questions should not be the sole factor when selecting a candidate.

Further Reading