Can you pass the intelligence test that's sweeping Facebook?

[Rixis]

If you can solve this, you must have an IQ over 150?

It's about as reliable as the "only 1% of people can score more than 5/10 in this quiz" as all your idiot family proceeds to get 10/10.

Anything to generate a few likes and shares, you'd think the people sharing this shit were making money from it. I suppose the websites running it make a nice penny on advertising, especially as the people likely to click that shit don't run ad blockers.

[kail]

Interesting. Are negatives still respected if x is less than y?

[I Push Buttons]

Um... Is this supposed to be hard? Because I figured out the answer in my head in like a few seconds. It is clear that the numbers should be x and x+1, and then you just need to solve 2x+1=23.

Not to mention that, strictly speaking, the rule is self-contradictory: it redefines the summation operation, while in the definition using the old one as well. The question is nonsensical.

You should post it on facebook so everyone knows how smart you are.

[Cairhiin]

I don't see how you need 150 IQ for that, as that was super easy really.

[naimc]

Thats just plain stupid...and if you claim to be a genius for having 'easily' solved it, you're stupid...and you should feel bad.

[Aurimas]

I agree that those pattern recognition things are pretty stupid (though I guess that to an extent they do show up on actual IQ tests).

I did get a kick out of the ones that threw a random "times zero" at the end to see if people would follow the orders of operations or just call it 0.

Interestingly, when you take stupid facebook crap and throw it on an extremely argumentative forum you end up with a similar pattern, as I'm sure you're realizing. I'll use your color scheme:

(argumentative+stupid)(argumentative+stupid) = argumentative² +2argumentativestupid + stupid²

Did you expect this to break any other way?

[ro9ue]

The answer is clearly 'pizza'.

[zenkai]

The pattern was pretty easy to figure out, even though the math rules don't make sense

[Azutael]

Finding a pattern isn't complicated - humans are very good at pattern recognition, so much so that we see patterns where there are none.

Serious question though, is that test even following the rules in math?
Afaik there's a multiplication sign between two parenthesis, right?

It doesn't add up though, that 12+11=123
What you do get is 1 and 23, that you just pull together and say is 123, and that's not math, that's just silly.

Please correct me if I am wrong, it is quite possible as I am not good at math.

[Gheld]

You can test mathematics knowledge with math questions.

You can test intelligence through culture fair pattern recognition questions.

But the two are incompatible.

Bastardizing the two ideas together is pointless.

Every time I see a post like that on Facebook I die a little on the inside.

[Gheld]

1 like = 1 prayer
1 share = 100 sandwiches

ignore if your a scumbag
(some dude says) what happens if I hide this shit?

Stuff like that is reason I don't bother with facebook anymore.

Or they'll post a picture of some tropical island getaway and be like "Would you live here with no internet for 12 seconds for 1023408794728094382904810984129341239840 BILLION DOLLARS!?"

And people actually reply.. and It's like... you idiot, you're just feeding some like farm.

[Kretan]

I always like reading the comments on these facebook posts to find the "winners" we have in society

[Gheld]

I always like reading the comments on these facebook posts to find the "winners" we have in society

Those posts are like Global Thermonuclear War. The only winning move is not to play.

[abracmike]

x + y = (x - y) (x + y)

Applying this definition is endlessly recursive though, x + y = (x - y) (x + y ) = (x - y) ( (x - y) (x + y) ) = (x - y) ( (x - y) ( (x - y) (x + y) ) )...

[Deleted]

I have no time for games.

[Java]

The correct formula is (x - y) * 10 + x + y

[Deleted]

you idiot you even whrote the rule rong lol first you said its (x-y)*(x+y) than you show that picture thats says its (x-y)|(x+y) and isnt this the answer what the f do you have to deduce ?
i know many words and the J stands for genius

[Deleted]

A teasingly tricky maths challenge that claims to separate the real boffins from those who just claim to know the answers is sweeping Facebook.

Some three million people have already taken the tricky 'Intelligence Test' which carries a 'share if you understand' tag on it.

Unsurprisingly, a shed-load of people have shared it, keen to show that they have an IQ of more than 150, apparently what you need to be able to understand it.

THE QUESTION:

Based on the intelligence test rule: x + y = (x - y) (x + y) and using the pattern below to help you, work out how ?+? = 123

6 + 4 = 210
9 + 2 = 711
8 + 5 = 313
5 + 2 = 37
7 + 6 = 113
9 + 8 = 117
10 + 6 = 416
15 + 3 = 1218

THE SOLUTION

If you split the answer of 123 in two: you get two numbers 1 and 23

To work back to what the numbers in question are, you need to work out two numbers where the second subtracted from the first makes 1 and also both added together makes 23.

YouTuber Talwalker has written a formula for the ?+? part, calling the first number in question x and the second number y.

Using these and the numbers 1 and 23 split out of the answer delivers:

x - y = 1
x + y = 23

This corresponds to:

12 – 11 = 1
12 + 11 = 23

Write you them together and you get 123, as in the brainteaser question which is written 12 + 11 = 123

Are you still with us? Then congratulations, you're a genuine boffin...

no you have to get your parentheses wrong for that to work.

[EliWallach]

I certainly don't have a 150 IQ and it took me all of 45 seconds. It's really all about pattern matching and knowing how these tests work. When the math makes no sense, look for some other meaning.

[Garnier Fructis]

That took like no time at all. With the given rule, 6 + 4 is 2 * 10, and looking at the first example showed that all you have to do is concatenate the two instead of multiplying.

And then it was just, 'what gives me 1 when I subtract and 23 when I add? 12 and 11.'

For people complaining about how this redefines things and what not: it's really no big deal. Take a course in linear algebra or abstract algebra, and you'll see some weird examples whose only purpose is to hammer home the point that addition and multiplication can be defined in different ways to form different mathematical structures.

Um... Is this supposed to be hard? Because I figured out the answer in my head in like a few seconds. It is clear that the numbers should be x and x+1, and then you just need to solve 2x+1=23.

Not to mention that, strictly speaking, the rule is self-contradictory: it redefines the summation operation, while in the definition using the old one as well. The question is nonsensical.

It's just overloaded notation. Like how the sum of two vectors in Rn is defined to be the componentwise sum, and the same symbol '+' is used twice to mean different things.