# Brain Teaser: What number should replace the question mark?

## Brain Teaser

Brain teasers are puzzle games where players try to figure out a solution to a problem. As fun as they are, brain teasers also challenge your brain. They are a great way to boost mental capacity and lateral thinking skills, maintain memory strength, and delight you. These exercises can be structured in a number of ways. Generally, they take the form of puzzles that must be solved. It often requires thinking unconventionally with given constraints in mind; sometimes, it involves lateral thinking. Logic puzzles and riddles are some types of brain teasers.

## Brain Teaser: What number should replace the question mark?

Look at the picture posted below. You will find a math puzzle that only those with a high IQ will be able to answer. Carefully check this math puzzle. Is it easy? Were you able to solve this tricky math puzzle? If you were able to solve it, let’s make it a challenge. Set a timer to 15 seconds. Find out how fast you can solve this math puzzle. If you can solve this brain teaser in less time, then that’s even better. Now, go ahead and bring out your mathematical brain to solve this tricky puzzle. Your time starts now. All the best!

While you brainstorm the answers, here is a tricky fact:

Solving brain teasers regularly can make you brighter and sharper. How? Well, brain teasers are known to improve cognitive functioning and enhance your critical thinking and problem-solving abilities. Also, as a bonus, they help refresh your mind and give you a much-needed break, breaking monotony. And completing this article will help you raise your IQ (Intelligence Quotient) and determine a person’s intelligence. A win-win situation, right? Hurry up! The clock’s ticking! Have you solved the brain teaser yet? Time’s up. We are going to reveal the answers now.

## Brain Teaser: What number should replace the question mark? – Solution

To solve a mathematical puzzle, observe the puzzle and try to solve it to find the solution to the problem. If you cannot find the solution, we have an answer for you. If you are still working to figure it out, we have the solution to this mathematical puzzle. This puzzle will allow you to see how keen you are and how reasonable an observer you are. If you still need help, the picture below will help you understand the solution.

By multiplying the numbers in red and subtracting the solution by the number in yellow, we should get the number 6 which is in the middle.

Now we have 11*5 = 55, 61-55 = 6; 13*3 = 45, 45-39=6; 5*3=15, 21-15=6.

So now, 11*13= 143. X-143 = 6, X=6+143 =149.

The missing number is 149.

Use mathematical equations and formulas to solve mathematical puzzles. It explains the proper order in which to answer a mathematical question. Many brain puzzles are complex in part because of intuitive human error.

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