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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

Maths Disagreement

593 replies

TulaOfDarkWater · 04/02/2022 12:41

One person thinks the answer is 165 and the other thinks 67, who is right?

YABU - 165
YANBU - 67

Or what’s the answer if both are wrong?

Maths Disagreement
OP posts:
BarbaraofSeville · 04/02/2022 13:39

I also didn't notice differences in shapes, times or numbers of bananas and used BODMAS and got 67.

But if it's more complicated than that I CBA.

Cantleave · 04/02/2022 13:39

@YouMadeABear

It's 67. Bodmas. 3 + 4 + (4×15)
Yes, I was going to say Bodmas as well. Definitely 67. Bodmas is the acronym which shows the order for solving mathematical equations — 1) B - Brackets 2) O - Order of power / roots 3) D - Division 4) M - Multiplication 5) A - Addition 6) S - Subtraction
Longdistance · 04/02/2022 13:39

Guys, the grey shape is 15, there are 3 shapes in it, so the square is 5, the hexagon is 5.
The shape in the last question has 2 shapes making it a 10.
The clock is at 2 o’clock.
2+3 bananas
Therefore, 3 bananas x 10 grey shape = 30
Then clock 2 + 3 bananas = 5

30 + 5= 35

Well, that’s how I see it.

Crackercrazy · 04/02/2022 13:40

@GeorgieTheGorgeousGoat

I thought it was 38 Confused
Thats what I get too 2+ 3 + (3x 11)
Itsalmostanaccessory · 04/02/2022 13:41

@Cantleave

Nope. It isnt 67.

It's 38 or 35

caringcarer · 04/02/2022 13:41

Stupid trick question with different shapes. If shapes were the same 165

YetAnotherUsernameToday · 04/02/2022 13:42

The clock says 2pm rather than 3pm so that's two. There are three bananas rather than four. BODMAS applies. I got 50.

Chocolatehamper · 04/02/2022 13:42

@TulaOfDarkWater

Oh jeez, to be honest neither of us noticed that the shapes / bananas / time changed so obviously we are both wrong then!

IF all the symbols were exactly the same throughout though, so:

Grey thingy = 15
Bananas = 4
Clock = 3

What would the answer be then? What we’re really disagreeing on is where the brackets go I guess so is it:

(3 + 4 + 4) x 15

or

3 + 4 + (4 x 15)

If all the parameters were the same, it would be

3 + 4 + (4 x 15) so 67!

(but they're not, so it's 38!!) Grin

Crackercrazy · 04/02/2022 13:42

@Longdistance

Guys, the grey shape is 15, there are 3 shapes in it, so the square is 5, the hexagon is 5. The shape in the last question has 2 shapes making it a 10. The clock is at 2 o’clock. 2+3 bananas Therefore, 3 bananas x 10 grey shape = 30 Then clock 2 + 3 bananas = 5

30 + 5= 35

Well, that’s how I see it.

I counted the individual sides of the shape - Hexagon 6 Pentagon 5 Square 4

???

BuanoKubiamVej · 04/02/2022 13:43

The main point I was trying to make (shouldn't have bothered trying to lay out the maths bit, cba with the detective work if all shapes not identical) is that these memes are created with the deliberate intention of being ambiguous in order to make people argue about them. The person who created them wants you to waste your time and help them achieve their goals exploiting others on social media by arguing about it and thereby promoting their status in the algorithms.

Just ignore it.

susan123 · 04/02/2022 13:43

It's 165

Itsalmostanaccessory · 04/02/2022 13:43

@YetAnotherUsernameToday

The shapes are different too. Not enough information to tell us if the square is worth 4 or 5 so it could be 35 or 38.

YetAnotherUsernameToday · 04/02/2022 13:43

And now I've noticed the grey shape only has two shapes, so it's 10 rather than 15. It's actually 35.

Soul11Soul · 04/02/2022 13:44

35
The grey shapes are actually three shapes layered on top of each other with each layer being worth 5.

So the sum is
2+3+(3x10) = 35

YetAnotherUsernameToday · 04/02/2022 13:44

@Itsalmostanaccessory thanks, I spott s right after I posted. Such a divider these things, the more you look the more you spot!

Itsalmostanaccessory · 04/02/2022 13:44

@susan123

It's 165
It is literally impossible for it to be 165. There would need to be brackets in the sum for that to happen, as well as all the shapes being the same in all the sums. They arent.
BarbaraofSeville · 04/02/2022 13:45

I know posters here like to insist everyone was taught BODMAS but I really, really, really wasn’t. Born 1975

You're about the same age as me and people our age lost months, if not years of primary and early secondary schooling due to teachers strikes. It really could be that you didn't learn BODMAS.

I did, but never learned a lot of English basics like adjectives, adverbs etc. As well as the frequent strikes, we also had a heating boiler that broke more often than it run (DM went to the same school as I did and I suspect it was the same boiler that had been there when she was 25 years earlier, but the building had been tripled in size in the interim). So it's not the case that everyone did learn everything.

YetAnotherUsernameToday · 04/02/2022 13:45

@Crackercrazy you are on to something there with the shape. That's definitely right.

yellowcourgette · 04/02/2022 13:46

I got 35.

The important thing to see is that all of the pictures here are different from the ones in the sums, and no sum contains the variation given in the final sum, and therefore you have to make assumptions. So theoretically it could be anything.

So...

The hexagonal shape is 15, so each internal segment could be assumed to be 5.

The banana bunches are 4, so each individual banana could be assumed to be 1.

The clocks are 3, so each hour could be assumed to be 1.

The general rule is multiplication before addition, although in the UK I would expect some brackets.

So the sum could be:

2 (2 hours) + 3 (3 bananas) + 3 (3 bananas) x 10 (2 hexagons)

Done with multiplication first is 10 x 3 + 2 + 3 = 35.

Or without the multiplication first the answer would be 80.

Tiredoftiers · 04/02/2022 13:46

38

DeepDown12 · 04/02/2022 13:47

Values:
Gray shape with 3 elements = 15
4bananas =4
Clock showing 3 = 3

Result:
Clock showing 2 (2) + 3 bananas (3) + (3 bananas (3) x gray shape with 2 elements (10)) = 2+3+(3x10) = 5+30 =35

Neither was right.

BarbaraofSeville · 04/02/2022 13:47

@BuanoKubiamVej

The main point I was trying to make (shouldn't have bothered trying to lay out the maths bit, cba with the detective work if all shapes not identical) is that these memes are created with the deliberate intention of being ambiguous in order to make people argue about them. The person who created them wants you to waste your time and help them achieve their goals exploiting others on social media by arguing about it and thereby promoting their status in the algorithms.

Just ignore it.

Seriously?

Just why?

JinglingHellsBells · 04/02/2022 13:47

165

3+4+4 +(11) x 15 = 165

The only difference can be is clock at 2pm has a different value to the clocks at 3pm, which is possible but I've not tried that version.

yellowcourgette · 04/02/2022 13:47

@BuanoKubiamVej

The main point I was trying to make (shouldn't have bothered trying to lay out the maths bit, cba with the detective work if all shapes not identical) is that these memes are created with the deliberate intention of being ambiguous in order to make people argue about them. The person who created them wants you to waste your time and help them achieve their goals exploiting others on social media by arguing about it and thereby promoting their status in the algorithms.

Just ignore it.

This. And I did it anyway. GAH.
Harrysmummy246 · 04/02/2022 13:48

@Ausik

There's no bracket though
Doesn't matter that there's no bracket.

Precedence still to mult/ division before addition/ subtraction