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Anonymous No. 16432923

>If John has 3 apples, and Elizabeth has 4 oranges, how much fruit do they both have in total?
when I was little, I thought the answer was 7. but now that I'm a math major I realize that you can't add up apples with oranges because they are different things and the things you add together must have the same unities. I also know that I can't use the numbers 3 and 4 so freely because I don't really get set theory, I failed it last semester, and without it the numbers 3 and 4 are ill defined. Also there's the question on whether 7 is the only answer possible, which makes it necessary to prove some sort of unicity theorem.
So if you ask me the same question now, I would reply "I don't know"

Anonymous No. 16432932

>>16432923
>I failed my calc 1 exam

Anonymous No. 16432961

This division by zero hurts me

Anonymous No. 16432991

>>16432923
apples and oranges are subsets of fruit. Shit b8, try harder next time.

Anonymous No. 16432999

>>16432991
well, then apples and chairs

Anonymous No. 16433003

>>16432999
Then he has 3 fruits. Math is about rigor, not psuedo-intellectual posturing.

Anonymous No. 16433007

>>16433003
you sound mad, for some reason

Anonymous No. 16433069

>>16432923
From line four onwards there's an implicit 0 on either side of the equation that you're ignoring.

Anonymous No. 16433099

>>16432923
Retard. The set of fruits is a union of apples and oranges, So the total number of fruits is:

[math] n(F) \geq 7 [/math]

Inequality because the question doesn't specify if that's exactly all the fruits the two have.

Anonymous No. 16433102

>>16433099
>the set of fruits is a union of apples and oranges
pears aren’t fruits anymore?

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Anonymous No. 16433237

There is nothing stopping you from adding 3 oranges and 4 apples to each other and then dividing that by 5.5 bananas. In math, that is.

In physics it is illegal because in physics we have units, and those units have physical meaning, and that meaning is derived from a rational exploration of reality, as diametrically opposed to the irrational masturbation of imaginary sets and operators.

Anonymous No. 16433271

>>16433102
I address that later, I should have said atleast earlier though. So, my bad

Anonymous No. 16433400

>>16433007
He's mad because you're retarded, and dealing with retards is frustrating.

Anonymous No. 16433435

lol just lol

Anonymous No. 16433451

>>16433237
I introduce the physical units of apples and oranges. I can make physical observations with those, eg there are 3 kiloappes in a food truck. By the very rules of dimensional analysis, I can’t add them.

Anonymous No. 16434109

>>16432923
reminder that zero is not a number

Anonymous No. 16434124

>>16433237
>>16433451
https://youtu.be/j2dHFC31VtQ?t=3m50s