Brain Teaser IQ Test: Can You Find the Missing Number in 9 Seconds?

Riddles are intriguing riddles that test our critical thinking skills and challenge our problem-solving skills. Very often, these riddles are used to test the intelligence of an individual.

Trying these riddles is a great way to de-stress and stimulate your brain, improving cognitive skills and critical thinking.

The main goal of this type of puzzles is to sharpen your observation skills, improve your memory, and improve your problem-solving skills.

According to research, regularly practicing these riddles can increase alertness, improve mood, improve concentration, and facilitate clear thinking.

If you love solving puzzles, this one will be very exciting for you.

Let’s start now!

You have genius level brain power if you can find the second man within 5 seconds!

IQ Test: Find the missing number in 9 seconds!

find the number

Source: Twitter/@math_puzzless

This brain challenge shared on Twitter by @math_puzzless will test how sharp your brain is.

The question posed to readers is: Can you find the missing number in 9 seconds?

Your time starts now!

In the image shared above, you can see the values ​​attached to the shapes.

You must find the missing number by finding the value of the respective shapes.

This is a simple question that will challenge your problem-solving skills.

People with a highly analytical mind will be able to find the hidden number within the time limit.

Have you found the missing number?

Hurry up; time is running out.

Study the image carefully; You may be very close to detecting the hidden number.

Do I need a hint?

Here it is…

Try to solve the equation and find the values ​​of each of the shapes.


Time is over.

Were you able to solve the puzzle?

If so, what number did you find?

Those who are eager to know the solution can read on.

The answer is presented below.

Only legends can detect ‘c’ in 6 seconds!

Find the missing number in 9 seconds – Solution

The solution is the next:

Triangle + Square = 17

Circle – Triangle = 8

If we add both equations we obtain

Square + Circle = 25


2 (Square + Circle) = 2*25

Therefore, the missing number is 50.

That was a puzzle, wasn’t it?

We hope you liked it!

Conclusions of this Brain Teaser challenge:

Based on the time it took you to locate the missing number, here are some conclusions:

1. If solved in 9 seconds: You have excellent problem-solving skills. You are the best of the best.

2. Between 9 and 15 seconds: You have good problem-solving skills. Keep practicing and you will be the best.

3. More than 15 seconds: You have average observation skills and need to practice regularly to improve your problem-solving skills.

Note: Brain teasers are simple tools to test observation skills and intelligence. If you really want to know what your true IQ levels are, you can take a professional IQ test, like the Mensa IQ test, to get accurate results.

Recommended reading:

Puzzle to test your IQ: find two hidden faces in 7 seconds!

Categories: Optical Illusion

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