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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:
Scotstar · 04/02/2022 15:17

2 +3+(3x10)=35

BrainNotAvailableTryAnotherOne · 04/02/2022 15:17

38

Nairobiblue · 04/02/2022 15:18

38

2+3 + (3 x 11) = 38

Burritogame · 04/02/2022 15:18

The first row is sum of 3 objects =45, so each element is 15. Not sure how people are getting 11 or 10 for that symbol.

Correct answer is 165

GertrudePerkinsPaperyThing · 04/02/2022 15:18

It’s 38

Not read the full thread so no idea if this has been explained!

Itsalmostanaccessory · 04/02/2022 15:19

@LasHappyDaz

The shapes.

Each set of shapes is worth 15. Three of them add up to 45.
Each set of shapes has, in total, 15 sides. So each side is worth 1 unit.

The bananas.
Each banana is worth 1.

The clock.
You use the number on the clock face.

Using these "assumptions", the final line of the puzzle is

2 + 3 + 3 x 11.

Because the clock face says 2. There are 3 bananas in each bunch. There are 11 sides of the shapes (a hexagon plus a Pentagon.)

2 + 3 + 3 x 11.

You multiply first so that leaves,

2 + 3 + 33

That's 38.

The OP then asked what her sum would be using the wrong numbers. That sum was
3 + 4 + 4 × 15

Multiply first so that leaves,

3 + 4 + 60.

Which is 67.

tantalisingduck · 04/02/2022 15:20

So I haven't read the full thread...
First line - grey shapes - each is 15. So 15 + 15 = 15 = 45

Second line 2 x bunch of bananas plus grey shape . Each bunch of bananas = 4. So 4 +4 + 15 = 23
(NB note that there are 4 bananas in each bunch so each banana =1)

Third line
1 bunch of bananas ( 4 bananas in bunnch) plus two clocks, each clock worth 3 ( and indeed hands pointing to the 3). So 4 +3 + 3 = 10

Fourth line
1 clock, but hand pointing to 2 ( so represents 2?) plus 2 bunches of bananas ( but only 3 bananas in bunch, so represents 3) times one grey shape ( not the same shape but no way of working out a different value so take as 15). No brackets so have to assume that just last two numbers multiplied first and then the others added under BODMAS.
so 2 + 3 +(3 x 15) = 50
or if take original value of all symbols
3 +4 + (4x15) = 67.

Cantleave · 04/02/2022 15:20

[quote GivenchyDahhling]@Cantleave If you’d spent a couple of minutes reading replies rather than typing all of that out, you’d have realised that the calculations you have done assume the symbols retain the same but there are subtle differences on the last line eg the number of bananas, number of sides on the shape, time on the clock.

Obviously there aren’t two solutions. Again, as has already been explained by many, many posters, the ambiguity is whether the grey shape gains its initial value of 15 because it has 15 sides in total or because it’s three shapes with a value of 5 each.[/quote]
Givenchy, if you had read the OP’s posts, you would have seen that what she actually asked was…….

“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)”

Yes, I have seen all the replies, but the OP clearly stated (see above taken directly from OP’s second post) what she wanted the answer to and I’m answering the question which was asked by the OP!

VirginiaQ · 04/02/2022 15:21

In last example clock is worth 2 not 3 because clock is showing 3

In last example bananas are worth 3 not 4 as there are only 3 bananas showing

Grey shape could be one of 2 things. There isn't enough information for a definitive answer. Shape in its entirety is worth 15 but in the last example it's missing a square. Either the missing square is worth 5 because each shape is worth 5 or it's worth 11 because it's based on the number of corners present. We don't know.

Therefore ?? Is either

2+3 +(3x11) = 38

Or

2+ 3 + (3x10) = 35

GertrudePerkinsPaperyThing · 04/02/2022 15:21

First row - looks like 3x 15 but break down the 15 - it’s made up of 4,5 and 6 sided shapes. On the bottom row it’s just the 5 and 6 so they represent number 11.

The bunches of bananas initially have 4 bananas and equal number 4. In the bottom row they have 3 bananas so equal 3

The clocks start of at 3 o’clock so equal three. On the bottom row it is 2 o’clock

Bottom row therefore is 2 + 3+ (3x11) = 38

You need to remember to bracket the 3 x 11 and do that first

tantalisingduck · 04/02/2022 15:22

Ohh cross posted with Itsalmostanaccessory.
And bravo - you worked out the values for the grey shapes. So my first example was wrong for the fourth line and needed 11 rather than 15 for the final value.

As you can see I agree with your workings otherwise

Itsalmostanaccessory · 04/02/2022 15:22

@Burritogame

You're wrong in 2 ways.

The first line has those symbols with the shapes. Each symbol as 3 shapes with a total of 15 sides.

In the last line, the symbol only has 2 shapes with a total of 11 sides. So it is worth 11.

Or.

Each symbol has 3 shapes and is worth 15, so each individual shape is worth 5. The last line only has 2 shapes so could be worth 10.

The second thing you're wrong about is the order. You need to do the multiplication first. Yours not multiplying the entire sum. You only multiple the last 2 together.

2 + 3 + 3 × 11 is the same as 2 + 3 + (3×11).

You dont need the brackets. Maths is always done in the same order. Multiplication before addition. You need to do that step first.

It is not 165.

jgw1 · 04/02/2022 15:22

@GeorgieTheGorgeousGoat

I thought it was 38 Confused
It is 38

Clock is 2 (look at where the hands point)
3bananas
then 3 bananas x 11 sides

diddl · 04/02/2022 15:25

@Burritogame

The first row is sum of 3 objects =45, so each element is 15. Not sure how people are getting 11 or 10 for that symbol.

Correct answer is 165

Even if you keep the values as 15, 4 & 3 it won't be 165.

3+4+4x15=67

Namechangehereandnow · 04/02/2022 15:25

In the final equation the numbers should be

Clock - 2
Bananas - 3
Shape - 10

Because, in the first equation each shape is 15, but is comprised of 3 shapes entwined, therefore each individual shape is worth 5 (in last equation only 2 shapes are present, making 10)
In the second equation each bunch of bananas is 4, there are 4 bananas in each bunch, so each single banana is 1 (in the last equation, each bunch consists of 3 bananas, making 3)
In the third equation, each clock is worth 3 and shows the time 3 o’clock. (In the last equation the time shows 2 o’clock, therefore the clock is 2)

Staffy1 · 04/02/2022 15:25

50

Itsalmostanaccessory · 04/02/2022 15:26

@Staffy1

50
Not even a little bit right.
ThumbWitchesAbroad · 04/02/2022 15:26

[quote EerieSilence]And because I wanted to have a confirmation, I used the uncle google afterwards.
Please don't click before you gave your response:

mindyourdecisions.com/blog/2017/03/09/the-bananas-clock-hexagon-viral-logic-puzzle/[/quote]
Aha! thought so.
Thanks Eerie!

LaChanticleer · 04/02/2022 15:27

3 + 4 + (4 x 15)

As far as I remember basic arithmetic it's this. Unless there are numbers in parentheses, you assume the multiplier is of the nearest number ...

But my Maths A Level was a long time ago.

stuntbubbles · 04/02/2022 15:27

[quote Itsalmostanaccessory]@LasHappyDaz

The shapes.

Each set of shapes is worth 15. Three of them add up to 45.
Each set of shapes has, in total, 15 sides. So each side is worth 1 unit.

The bananas.
Each banana is worth 1.

The clock.
You use the number on the clock face.

Using these "assumptions", the final line of the puzzle is

2 + 3 + 3 x 11.

Because the clock face says 2. There are 3 bananas in each bunch. There are 11 sides of the shapes (a hexagon plus a Pentagon.)

2 + 3 + 3 x 11.

You multiply first so that leaves,

2 + 3 + 33

That's 38.

The OP then asked what her sum would be using the wrong numbers. That sum was
3 + 4 + 4 × 15

Multiply first so that leaves,

3 + 4 + 60.

Which is 67.[/quote]
That’s a lot of work when I can simply set fire to my mobile phone and forget I ever saw this thread.

Hawkins001 · 04/02/2022 15:30

Maths is not my strong point

GertrudePerkinsPaperyThing · 04/02/2022 15:31

I know you don’t need to put the brackets but it helps me!

BernadetteRostankowskiWolowitz · 04/02/2022 15:33

If you don't look at the detail on the images on the last line, it's 67 - I got that first at face value.

If you look in detail at the shapes on the bottom line and alter them to what they are now showing, the answer is 38.

Heshcher · 04/02/2022 15:33

It's 38. The shapes changed in the last line.

knittingaddict · 04/02/2022 15:37

165

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