Challenge: Can you solve this math problem for middle schoolers – without a calculator?
Classic brain training methods are perhaps puzzles like crosswords or sudoku, but I have recently become more attracted to the type of challenge you’ll see below.
These puzzles have been flooding the web lately, probably because they are really fun!
These are old classic mathematical problems. When you were in middle or high school.
These math problems are more fun when you find yourself trying to remember the math you learned as a child.
Can you figure out the correct solution?
Here is the challenge, in the picture below.
At the top of the picture, we see the task and then four possible answers.
Which solution do you think is the correct one?
How did you come up with it?
Take your time and think about it to find the correct solution.
Done? Below you can check if you picked the right number!
A
B
C
The correct answer
The correct answer is B: 12.
Why is 12 the correct answer?
Well, if you remember from your school days, according to the order of operations, you do multiplication before addition and subtraction, so you start by solving 3 x 3, which results in 9.
Then we are left with a simpler math problem: 3 + 9 – 3 + 3
The answer is therefore 12.
Did you pick the correct number? Congratulations!
Sad news about Brad Pitt. The announcement was made by the great actor himself:
Actor Brad Pitt revealed in a recent interview that he suffers from prosopagnosia, a rare neurological disorder also known as “facial blindness.”
Dani Blum describes the disorder’s signs, causes, and remedies in an article for the New York Times.
Borna Bonakdarpour, a behavioral neurologist at Northwestern Medicine, claims that face blindness—not color blindness or general vision impairment—is the main symptom of prosopagnosia.
The National Institute of Neurological Disorders and Stroke states that there is no connection between the illness and memory loss, vision problems, or learning impairments.
Blum continues, “It is not the same as forgetting or occasionally having trouble finding the correct word.
The severity of prosopagnosia will differ from person to person.
For instance, some people might have problems identifying a familiar face, such as that of a close friend or relative, while others might have trouble identifying their own reflection.
Additionally, some people might not be able to distinguish between faces and objects.
Notably, some data indicates that individuals with prosopagnosia may have chronic anxiety or depression due to the loneliness and fear that are frequently associated with the illness.
Blum notes that some people avoid contact with family members and other loved ones out of concern that they won’t be able to properly recognize or acknowledge them.
“Navigating basic social relationships with prosopagnosia can become difficult,” she says.
Pitt admitted that he has trouble recognizing people’s faces for years in a recent interview with GQ, despite never having gotten a formal prosopagnosia diagnosis.
In fact, Pitt claimed in a 2013 interview with Esquire that his difficulty recognizing people’s appearances was so great that it frequently made him want to isolate himself.
He explained, “That’s why I stay at home.
What is the condition’s cause?
People who are diagnosed with prosopagnosia often fall into one of two categories: either they are born with it or they acquire it.
However, estimations reveal that as many as one in every 50 people may struggle with some lifetime form of the disorder, and experts hypothesize that it may run in families.
According to Blum, research “suggests that congenital, or lifelong, prosopagnosia is less prevalent.”
According to Andrey Stojic, director of general neurology at the Cleveland Clinic, children born with the illness “don’t seem to have any visible structural abnormality” in the brain.
Notably, doctors don’t fully understand what causes congenital prosopagnosia because there aren’t any obvious brain lesions in persons who have it.
In contrast, people who develop prosopagnosia later in life may have brain abnormalities brought on by a trauma or head injury.
According to Bonakdarpour, individuals can also develop prosopagnosia while dealing with Alzheimer’s illness or following a stroke.
What therapies are available for prosopagnosia?
Prosopagnosia is now untreatable, according to Bonakdarpour. The problem can be treated, though.
People who have the syndrome frequently attempt to distinguish between people by focusing on physical characteristics like hair color, gait, or voice.
Leave a Reply