Random pic thread.

One of my son's good buddies bought me this for Christmas from somewhere. He's got a firebird that he's trying to get going and always has questions about stuff. Pretty cool he thought of me.

20241223_195636.jpg
 
mbalbritton said:
Uuuhhhhmmmmm… new math?
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No. 2+1 first because parentheses.
Then equal priority with division and multiplication: 6/2x3
6/2=3
3x3=9

Of course we can all argue about which way is right and that comes down to how we were taught, which is the whole point of the trick exercise anyway.
 
jeepinmatt said:
No. 2+1 first because parentheses.
Then equal priority with division and multiplication: 6/2x3
6/2=3
3x3=9

Of course we can all argue about which way is right and that comes down to how we were taught, which is the whole point of the trick exercise anyway.
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Equal opportunity? That gives the opportunity of two different outcomes.

What happened to My Dear Aunt Sally?

Which ever way it is, how did the rules of math change?
 
mbalbritton said:
Equal opportunity? That gives the opportunity of two different outcomes.

What happened to My Dear Aunt Sally?

Which ever way it is, how did the rules of math change?
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Huh? There's only one correct answer unless you are making groups that aren't there, like 6/(2x3)
 
UTfball68 said:
I’m trying to ease in to things, you see how little I was used to…forge sounds like it hurts. But I do have a dual fuel leaf blower and 20” saw coming…so my ho phase is definitely coming.
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Man, I fought m18 for years…. Until I was going up west to to help and thought a battery powered saw would help….. well 27 tools and 18 batteries later the chainsaw is the least favorite. It’s great but doesn’t replace and gasser. Just opens up a damn new rabbit hole.
 
mbalbritton said:
Apparently I’m remembering only part of the order of operations. Seems I’m not remembering the part where Multiply before divide is overruled by left to right.
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I've always been taught that multiplication/division and addition/subtraction were done left to right 🤷‍♂️

Duane
 
CLRracer said:
I've always been taught that multiplication/division and addition/subtraction were done left to right 🤷‍♂️

Duane
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If the grouping is correct it doesn't matter what order you go in.
A x B x 1/C is the same as A x 1/C x B.
But a lot of people misinterpret the latter as A x 1/(C x B)
 
RatLabGuy said:
If the grouping is correct it doesn't matter what order you go in.
A x B x 1/C is the same as A x 1/C x B.
But a lot of people misinterpret the latter as A x 1/(C x B)
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it absolutely matters.
Many people learned incorrectly that it is
1parenthesis
2multiple
3div3de
4add
5subtract

In the exmaple that would mean
6/2*(2+1)
So 6/2*3
since multiply comes first they multiple 2*3 and get 6 then divide 6 by 6 and get 1.
The correct order is
1 Parenthesis
2 multiply/divide
3 add/subtract
 
Ron said:
The correct order is
1 Parenthesis
2 multiply/divide
3 add/subtract
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Just to be clear- this is literally what I said.
Or at least what I meant if it wasn't said properly.
Its really (My Dear) (Aunt Sally)
Whether you multiply first or divide first makes no difference. They are at the same level in the hierarchy and can be done in any order.

Where most people mess up is implying a grouping that isn't really there, and that creates a false difference on left/right order

IMO your vision of how things fit together is different if you think of division as the inverse of multiplication, and it simply means 1/x. Translate all division to that and it becomes very clear.
 
jeepinmatt said:
Of course we can all argue about which way is right and that comes down to how we were taught, which is the whole point of the trick exercise anyway.
Click to expand...
 
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