How to Answer Interview Questions That Test Your IQ?
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- Jaro Education
- 27, May 2025
- 2:00 pm
An IQ (Intelligence Quotient) test plays a crucial role in evaluating a person’s intellectual abilities, including problem-solving, critical thinking, and analytical skills. IQ test questions are asked during interviews to measure a candidate’s ability to think independently and solve problems efficiently. These IQ test questions help them understand how perfectly the candidate can manage tough tasks and make crucial decisions under massive pressure more systematically. In this blog, we have listed 10+ IQ test questions and answers. So, let’s dive in!
What is an IQ Test?
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An IQ test often focuses on taking multiple tests that measure intelligence abilities, including spatial recognition, language ability, mathematical ability, short-term memory, and analytical thinking. The IQ test checks your capacity to learn rather than testing what you have learnt in the past.
After measuring a range of your intellectual abilities, this test provides you with a score that is considered a way to evaluate your capabilities and potential. The average IQ score is 100. Therefore, if your score is higher than 100, then you are better than the average person. However, scoring a lower number means low performance.
Types of IQ Tests
Several different intelligence tests are available that are designed to measure various features of cognitive abilities. However, these tests can vary from content to content. These tests are specifically designed to be used for both adults and children. Here are some commonly used IQ tests:
- Cognitive Assessment System
- Kaufman Assessment Battery for Children
- Stanford-Binet Intelligence Scale
- Universal Nonverbal Intelligence Test
- Wechsler Adult Intelligence Scale
- Wechsler Intelligence Scale for Children
- Woodcock-Johnson Tests of Cognitive Abilities
15 Interview IQ Test Questions and Answers
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Now that you know about IQ tests and their types, let’s move on to IQ test questions and answers.
Preparing for intelligence test questions for interviews is crucial for demonstrating cognitive abilities and problem-solving skills. Therefore, we have listed 12 IQ questions with answers asked in interviews:
1. Which months of the year have 28 days?
Answer: All months of the year have at least 28 days, from January to December.
2. How would you create an alarm clock for the deaf?
Answer: For deaf people, I would build an alarm clock in which vibration is used instead of sound to wake them up. It could include a vibrating pad under the pillow or mattress, providing a strong tactile sensation.
3. If you were in a dark room and only had one match, then what would you light first - an oil heater, an oil lamp, or a candle?
Answer: In this situation, I would light the match first and then use it to light the candle. Because without lighting the match, I would not be able to light anything.
4. A red house is made of red bricks, and a blue house is made of blue bricks. What's a greenhouse made of?
Answer: A greenhouse is usually made of glass so that the sunlight can pass through.
5. A house has only four walls, and all of them face south. Each wall has its window, and suddenly, a bear walks by. What colour is the bear?
Answer: If all four walls of the house face south, then it means that the only location can be at the North Pole. Since polar bears are generally found at the North Pole, and they are white, the answer is white.
6. You have two ropes coated in oil, and each takes exactly one hour to burn, but not at a constant rate. How can you measure exactly 45 minutes using these two ropes?
Answer: First, burn one rope from both ends simultaneously. At the same time, light the one end of the second rope. The first rope will take 30 minutes to burn completely (as it burns from both ends), while the second rope will have 30 minutes left to burn. When the first rope burns out, light the other end of the second rope. It will burn in 15 minutes, finishing in a total time of 45 minutes.
7. What is half of 2 + 2?
Answer: Half of 2 is 1, and 1 + 2 = 3. So, the answer is 3.
8. Riya needs 18 books from the library. At a time, she can only carry 4 books. What would be the minimum number of trips Riya needs to make to the library?
Answer: To calculate the minimum number of trips, divide the total number of items, i.e., 18 books, by the maximum number of items carried on each trip, i.e., 4 books. In this case, 18 divided by 4 equals 4 with a remainder of 2. Hence, Riya needs 5 trips to carry all 18 books, as she will carry 16 books in 4 trips, and in the 5th trip, she will carry the remaining 2 books.
9. Imagine you are driving a bus from New York to Boston. 15 people get on the bus in New York, and only one person gets off the bus while reaching Boston, the destination city. What is the name of the bus driver?
Answer: It is initially mentioned in the question that I am driving the bus, so the name of the driver is my name.
10. A boy and his father were in a car accident. The father dies on the spot, and the boy is taken to the hospital. The surgeon says, "I can't operate on this boy; he is my son." How is this possible?
Answer: The surgeon is the boy’s mother.
11. Name three consecutive days without using Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday.
Answer: Yesterday, today, and tomorrow are three consecutive days without using weekdays.
12. Can you tell me the word which is spelt incorrectly in every dictionary?
Answer: The word ‘incorrectly’ is spelled incorrectly in all dictionaries.
13. If you are in a race and overtake the person in second place, then at what position are you now?
Answer: If you overtake the person in second place, then you take his/her position. So, you are in second place now.
14. In a lake, there is a patch of lily pads, and every day, it doubles its size. If it takes 48 days for the patch to cover the entire lake, how long does it take to cover half of the lake?
Answer. If the patch of lily pads takes 48 days to cover the entire lake and it doubles its size every day, then it means that it will take 47 days to cover half of the lake.
15. How many times can you subtract 10 from 100?
Answer. You can subtract 10 from 100 only once because after subtracting it for the first time, the value will be 90. Since 90 is not equal to 100, it indicates that you can subtract 10 from 100 only once.
How to Effectively Answer IQ Test Questions in an Interview?
Now that you understand which types of IQ test questions are asked in interviews, let’s discuss how to effectively answer these intelligence test questions:
- Listen Carefully and Think Before You Answer: It is essential to listen to the question carefully and understand completely before answering. Always take your time to examine the question and find the patterns or logic, if any.
- Show Your Cognitive Process: While answering IQ test questions, make sure to explain your reasoning and show your cognitive process. Even if you don’t provide a correct answer, it is essential to showcase reasonable thinking and critical analysis, impressing the interviewer.
- Practice, Practice and Practice: With practice, you can answer the IQ test questions with confidence, making you a better ‘test-taker’. Find online resources or books with sample questions and practise them thoroughly.
Conclusion
IQ test questions are essential for measuring an individual’s critical thinking, problem-solving, and analytical skills. Professionals in different industries, such as management consulting, finance, software engineering, investment banking, and research and development often come across these intelligence test questions during interviews. Practising IQ test questions and answers for interviews can develop your critical thinking skills, maximise your performance, and improve your chances of obtaining job opportunities.
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