Puzzles and puzzle games are very popular on the Internet and on social networks. Intellectual challenges are particularly popular and their sophistication continues to grow. **The IQ test** is a good example of this kind of activity that tests your ability to solve complex problems.

**This is about finding the missing number in the last square, by analyzing the relationship between the numbers and the calculation logic.** The IQ test is a way to measure an individual’s intelligence quotient, based on their ability to answer questions and solve problems.

Most tests include a series of questions that assess cognitive ability, comprehension, and reasoning. IQ tests are not only used to check intelligence, they can also help estimate an individual’s ability to learn or work in a given field. **Intellectual challenges are a fun and challenging way to test your knowledge and intelligence.**

## IQ test: what is the missing number?

IQ tests are a great way to find out your level of intelligence. That is why **it is important** understand how the tests work and what they measure. IQ tests allow everyone **assess their ability to solve puzzles**.

For example, finding the missing number using logic and number relationships is one of the main methods of assessment. **We need to calculate the missing number** by finding the relationship between numbers and the logic of calculation.

To do this, you have to be attentive to the clues in the questions and to the mathematical means that can help find the solution. These questions are designed to test whether we have the adequate intellectual abilities to solve complex puzzles.

IQ tests are a great way to find out how smart you are, which is why it’s important to focus well. Finding the missing number using logic and number relationships is a very effective method of assessment.

## The IQ test solution

**The missing number was 50**. Indeed, by adding the squares of the numbers in each box, 1²+2²+3² = 14 for the first box, 2²+3²+4² for the second and 3²+4²+5²=50 for the third, the final result is 50 .

We would like to thank everyone who took on this challenge and spent time trying to solve it. If you enjoyed taking up this challenge, don’t hesitate to share it around you on social networks so that others can try it!