Can you solve this math puzzle

Have you ever come across a math problem that seems easy at first glance, only to realize that most people get it wrong? The equation 9 – 9 ÷ 9 + 9 – 9 ÷ 9 = ? is one such puzzle that confuses many. It looks simple, but if you’re not careful, you might end up with the wrong answer.

Are you ready to put your math skills to the test? Take a moment to solve it before reading ahead. Think you got it right? Let’s find out!

Why Do So Many People Get This Wrong?

At first glance, this equation appears straightforward. However, small details in mathematical rules trip people up. Here are some common mistakes that lead to the wrong answer:

  1. Ignoring the Order of Operations (PEMDAS/BODMAS) – Many people solve the problem from left to right without following the correct order of operations.
  2. Misplacing Parentheses (Even When They Aren’t Written) – Some assume parentheses where there are none, changing how they approach division and subtraction.
  3. Rushing Through the Calculation – The problem is designed to look easy, so people tend to solve it quickly and overlook critical steps.

So, what’s the correct approach? Let’s break it down step by step.

Step-by-Step Solution

To solve this equation correctly, we must follow the order of operations. The most commonly used rule is PEMDAS (Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)).

Video : Find The Missing Number – Hard Math Puzzle

The given equation:
9 – 9 ÷ 9 + 9 – 9 ÷ 9

Step 1: Solve the Division First

According to PEMDAS, division comes before subtraction and addition. So, let’s divide first:

  • 9÷9=19 ÷ 9 = 19÷9=1
  • 9÷9=19 ÷ 9 = 19÷9=1

Now, substitute these values back into the equation:

9 – 1 + 9 – 1

Step 2: Perform Addition and Subtraction from Left to Right

Now, we calculate in order from left to right:

  • 9 – 1 = 8
  • 8 + 9 = 17
  • 17 – 1 = 16

So, the correct answer is: 16

Common Incorrect Answers and Why They Happen

Many people arrive at incorrect answers because they don’t follow the correct order of operations. Here are some of the most common mistakes:

  • Answer: 0 – This happens when someone groups all the numbers together without following PEMDAS, incorrectly simplifying the problem as:
    9−9−9+9−9=09 – 9 – 9 + 9 – 9 = 09−9−9+9−9=0
  • Answer: 1 – Some mistakenly subtract 9 from itself first before dividing, leading to:
    (9−9)÷9+9−9÷9=1(9 – 9) ÷ 9 + 9 – 9 ÷ 9 = 1(9−9)÷9+9−9÷9=1

These errors reinforce the importance of following the correct mathematical rules step by step.

Why Understanding Order of Operations Matters

You might wonder—why does it even matter? Well, mathematics is built on logical rules, and following them correctly ensures we get consistent, accurate answers. The order of operations is used in everything from programming to engineering to everyday calculations.

Video : Only 1% of people pass this logic test

Think about it this way: If a recipe tells you to bake a cake at 350°F for 30 minutes before adding frosting, you wouldn’t reverse the steps, right? Math works the same way—sequence matters!

Put Your Skills to the Test

Did you get the correct answer? Share your response in the comments! Were you surprised by how easy it was to make a mistake?

If you enjoy solving puzzles like this, challenge your friends and see if they can get it right! Math riddles help improve problem-solving skills and boost logical thinking.

Want more brain teasers like this? Keep testing yourself with tricky puzzles and improve your critical thinking skills! Who knows? The next time you see a math problem like this, you might be among the 10% who get it right on the first try!

Science Shows That Women Sleep Better Next To Dogs Than Men

Undoubtedly, the importance of a good night’s sleep for overall health is widely acknowledged. With numerous studies exploring the optimal ways to achieve quality rest, recent research proposes a surprising solution, sharing the bed with dogs. Canisius College in New York State spearheaded this unconventional investigation, revealing that women experience better sleep next to their canine companions compared to human or feline counterparts.

Lead researcher Christy Hoffman, Ph.D., an animal behaviorist, conducted a survey involving nearly a thousand women across the United States to draw these intriguing conclusions. The results unveiled that 55% of participants shared their beds with at least one dog, 31% with a cat, and 57% with a human partner.

Hoffman delved into the reasons behind dogs emerging as superior sleep partners. The study highlighted that dogs’ sleep patterns align more closely with humans than those of cats. Hoffman theorizes that this synchronization may contribute to improved sleep quality, as dogs are adept at accommodating their owners’ sleep schedules, potentially mitigating disruptions caused by differing bedtime routines.

Furthermore, the structured routines imposed by dogs, such as morning walks, assist in regulating their owners’ daily schedules, thereby enhancing overall sleep quality. Another contributing factor is the physical stillness of dogs during sleep, unlike fidgety feline companions. Women in the study reported that dogs tended to remain on the bed throughout the night, fostering a sense of security and stability.

The study’s third crucial finding emphasizes the unique sense of security that dogs provide. Unlike cats or even human partners, dogs offer a heightened level of psychological comfort. Hoffman suggests that the perception of dogs as vigilant protectors, capable of alerting their owners to potential intruders, plays a role in enhancing the sense of security.

Despite these intriguing findings, the study acknowledges the subjectivity of sleep preferences. Factors such as a dog’s snoring or generating excess warmth could pose challenges. Additionally, there are individuals who find solace in the companionship of cats during bedtime.

It’s essential to note that the study relies on participants’ subjective perceptions of their pets’ impact on sleep quality and duration. Consequently, further research is necessary to definitively crown dogs as superior sleeping partners. Hoffman emphasizes the need for continued exploration into the various contexts under which pets positively or negatively influence sleep quality.

As American households increasingly welcome pets, understanding these dynamics becomes crucial. Future research may utilize technologies like Fitbit-like devices to objectively track sleep quality in diverse sleeping conditions, providing a more comprehensive understanding of the intricate relationship between humans and their animal companions during bedtime.

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