Question

what is infinity+7=?

Answer 1

infinity

Answer 2

it is also infinity buddy

Answer 3

if infinity is a concept and not a number then where does this 7 go?

Answer 4

deep question...

Answer 5

@TuringTest can we think of infinity as irrational?

Answer 6

I mean having irrational property?

Answer 7

because is not at all a number

Answer 8

To understand better the concept of infinity, I think you shuold take a look at this http://en.wikipedia.org/wiki/Hilbert%27s_paradox_of_the_Grand_Hotel

Answer 9

@Recursing yeah after reading it, this question came in my mind

Answer 10

it's only a symbol to show that man doesn't able to calculate

Answer 11

1/0

Answer 12

@furan143 if it's so then why infinity + 7 = infinity?

Answer 13

according to basic arithmetic axioms a+b = b+ a only if a & b are numbers

Answer 14

If you can understand how one guest can find a room into the "hotel", even if it's fool, than you get that ininity+1=infinity, right?

Answer 15

The concept of infinity has very different proprieties than those of numbers. As you can see.

Answer 16

but the rooms in hotel can be counted?

Answer 17

and according to this hotel's example, does it mean the infinite is finite

Answer 18

I will ask u 1 question

Answer 19

Every room has a number, but there is an infinite number of rooms

Answer 20

I'm adding 7 with one number what is the answer I get

Answer 21

@Recursing if every room has a number then the last room of this infinite series of room must have a number too so that makes it finite

Answer 22

There is no "last" room

Answer 23

for answering the above question u need to know what that number is do n't u

Answer 24

OK so infinity is not a variable

Answer 25

No, it's a concept.

Answer 26

OK so can we say that infinity + 7 = 7 + infinity ?

Answer 27

we are not talking about variables we are talking about something that none in the universe knows

Answer 28

can we say that it's an unknown number?

Answer 29

No, it's not a number

Answer 30

you can

Answer 31

No, it really isn't a number. If you assume that infinity is a number, than if infinity +1 = infinity, by subtracting infinity to both sides, you get that 1 = 0.
Infinity is NOT a number

Answer 32

you are subtracting a number that u don't know

Answer 33

if it's not a number then how can we add a number into a non number thing. Like you gave an example of infinite rooms in hotel & then asked to add 7 rooms in that, in that case you added rooms in rooms, similarly if you are adding 7 in infinity then infinity is a number, isn't?

Answer 34

infinity is a number that none of us know

Answer 35

basically if you want to do mathematical operation you want to know the operands

Answer 36

No, it isn't.
You can add 7 to infinity even, if infinity is not a number, because there can be 7 more guests in a Hotel that has an infinite number of other guests.

Answer 37

@furan143 infinity is not a simbol for "unknown".

Answer 38

okay I'm accepting that infinity not a number then what is (1/infinity)

Answer 39

0

Answer 40

what will i get when i divide one with a concept

Answer 41

The result can be considered 0, or infinitesimal

Answer 42

so infinity is a concept that has some properties that are similiar to number properties so that we can apply some arithmetic rules on it within some suitable fashion, but most of it's properties are individual & distinguish

Answer 43

thanks @Recursing

Answer 44

They're very different from number propreties, keep that in mind

Answer 45

well 7 got in it

Answer 46

Yes, but any number would increase if you add 7 to it
x+7=x
Has no solution in numbers.

Answer 47

I am not saying that all number properties we can say that 1to infinity as 1,2,3,4,5,1,5,21,6,7,8,9,......infinity

Answer 48

got it