Bama 1,743 Posted August 9, 2019 Share Posted August 9, 2019 https://www.popsugar.com/family/Internet-Torn-Math-Problem-Answer-1-16-46440386 The Internet Is Completely Divided Over the Answer to This Simple Math Equation. There are two obvious answers to this problem but only one of them is correct.The answer that you get is based on how you were taught to solve algebra equations.See below. Quote The internet is completely divided over a simple algebraic equation that your middle schooler would likely solve in seconds. However, it's not that it's difficult to get to an answer; it's a matter of which answer you get. Some of those who solve the equation are getting an answer of 1 and others are landing at 16. The confusion that's coming up is a result of the way people were taught the order of operations, or PEMDAS — remember that acronym? Here's a brief refresher as to how PEMDAS works, for those who need it: P: solve the equation inside any parentheticals first. E: solve any exponential equations (hint: there aren't any in this one, so we can ignore this) M: solve any multiplication problems* D: solve any division problems* A: solve any addition problems* S: solve any subtraction problems* *In most instances, you're taught to solve the MD and AS portions of PEMDAS from left to right, but some people were taught that if there's a number attached to a parenthetical (which implies that you multiply the two numbers), that you're still working on the parenthesis portion of PEMDAS. (Which is also known as BOMDAS in some parts of the world, but ultimately means the same thing.) How to Get to an Answer of 16 Here's the equation: 8 / 2(2+2) First, add the numbers in the parenthesis, which equal 4. Then, multiply and divide from left to right. First, 8 divided by 2 is 4, and 4 times 4 is 16. How to Get to an Answer of 1 Here's the equation once again: 8 / 2(2+2) First, add the numbers in the parenthesis, which equal 4. Then, to finish off the parenthesis, multiply 4 by the 2, which equals 8. Then, 8 divided by 8 is 1. Now technically, even though the internet is torn, the correct answer is 16. BUT before you @ me, hear me out: say the equation was 8 / 2 x 4, thus eliminating the parenthesis component completely. You would always work from left to right, which would give you the answer of 16 (8 divided by 2 is 4, times 4 is 16). 1 Link to post Share on other sites

trthebees 271 Posted August 9, 2019 Share Posted August 9, 2019 6 hours ago, Bama said: How to Get to an Answer of 1 Here's the equation once again: 8 / 2(2+2) First, add the numbers in the parenthesis, which equal 4. Then, to finish off the parenthesis, multiply 4 by the 2, which equals 8. Then, 8 divided by 8 is 1. Now technically, even though the internet is torn, the correct answer is 16. BUT before you @ me, hear me out: say the equation was 8 / 2 x 4, thus eliminating the parenthesis component completely. You would always work from left to right, which would give you the answer of 16 (8 divided by 2 is 4, times 4 is 16). For me, the answer is 1. I've done reasonably high level maths and engineering calculations, and my instinct is that the 2 outside and immediately adjacent to the brackets belongs to and operates on the brackets as a single expression to be calculated first. If I wanted the answer 16 which the author prefers, I would write (8 ÷ 2) x (2 + 2) for absolute clarity. Just my thoughts, I'd hate the next rocket to Mars to depend on it! 6 Link to post Share on other sites

SkyMan 23,730 Posted August 9, 2019 Share Posted August 9, 2019 16. Link to post Share on other sites

Headshot 29,357 Posted August 10, 2019 Share Posted August 10, 2019 There is no rule about working from left to right on the equation. There is, however, a rule that says you must perform any multiplication before you perform any division, and the only way you can get 16 as your answer is to break that rule. he answer is 1. 1 Link to post Share on other sites

Administrator +Salty Dog 69,179 Posted August 10, 2019 Administrator Share Posted August 10, 2019 If you punch it into your computer you will get 16. 1 Link to post Share on other sites

SkyMan 23,730 Posted August 10, 2019 Share Posted August 10, 2019 (edited) 57 minutes ago, Headshot said: There is no rule about working from left to right on the equation. Yes, there is. 57 minutes ago, Headshot said: There is, however, a rule that says you must perform any multiplication before you perform any division No, multiplication and division are on the same level. In fact, they are the same operation. Division is multiplication by a fraction. Really, it should probably be written PE(MD)(AS). Addition and subtraction are also on the same level for the same reason. It's just a poorly written equation, probably by some math teacher looking to confuse kids on a test. Edited August 10, 2019 by SkyMan Link to post Share on other sites

SkyMan 23,730 Posted August 10, 2019 Share Posted August 10, 2019 50 minutes ago, Salty Dog said: If you punch it into your computer you will get 16. Don't know if you used Excel but it agrees. Link to post Share on other sites

SkyMan 23,730 Posted August 10, 2019 Share Posted August 10, 2019 For rpn fans..... 8 enter 2 / 2 enter 2 + * Yielding 16 Link to post Share on other sites

+to_dave007 5,914 Posted August 10, 2019 Share Posted August 10, 2019 The thread is called "the Internet is completely divided" over this answer. Hard to imagine that even a small percentage of the persons on the internet have even weighed in on this subject.. but ok.. But if indeed this is true.. then 1/2 of the Internet has the right answer,.. and will gain no benefit from my answer. And the other half of the internet.. well.. they couldn't handle the right answer.. so they'll also gain no benefit from my answer. And since when do I wish to join the lemmings in their headlong flight. So I'll make spaghetti for lunch instead. At least my son will be happy. 1 Link to post Share on other sites

Davaoeno 37,516 Posted August 10, 2019 Share Posted August 10, 2019 6 minutes ago, to_dave007 said: then 1/2 of the Internet has the right answer actually " divided" could be 99% vs 1 % 2 2 Link to post Share on other sites

+to_dave007 5,914 Posted August 10, 2019 Share Posted August 10, 2019 2 minutes ago, Davaoeno said: actually " divided" could be 99% vs 1 % Mmmm.. perhaps.. But "completely" divided would suggest a more even split closer to 50/50. I'm SURE that's why the attorney added the word. 1 Link to post Share on other sites

Administrator +Salty Dog 69,179 Posted August 10, 2019 Administrator Share Posted August 10, 2019 4 minutes ago, Davaoeno said: actually " divided" could be 99% vs 1 % That's Divided. The OP said "Completely Divided"… Link to post Share on other sites

Davaoeno 37,516 Posted August 10, 2019 Share Posted August 10, 2019 au contraire - i believe that " completely divided" means that there is no remainder after the division is done . 12 can be completely divided by 2, 3, 4 6 but not 5 or 7 Link to post Share on other sites

Administrator +Salty Dog 69,179 Posted August 10, 2019 Administrator Share Posted August 10, 2019 5 minutes ago, to_dave007 said: Mmmm.. perhaps.. But "completely" divided would suggest a more even split closer to 50/50. I'm SURE that's why the attorney added the word. Wouldn't that be "Equally Divided"… 1 Link to post Share on other sites

Davaoeno 37,516 Posted August 10, 2019 Share Posted August 10, 2019 1 minute ago, Salty Dog said: Wouldn't that be "Equally Divided"… finally something I can agree with !!! Link to post Share on other sites

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