Anonymous

# HARD MATH QUESTION!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!?

HARD MATH HOME WORK! whats 1+1

Relevance

Well you take a 1, then you take another 1, and you got 11.

But 11 isn't the only answer. There are infinite answers to this problem.

You can use any variable (any symbol or letter) (s) such as:

1+1=x

1+1=y

1+1=z

Or, since "1" is a symbol itself, use it as a variable:

1=[whatever # you want it to be]

So, 1+1=[twice that #]

If 1=128,

1+1=256

So, 1+1=[the # of your choice]

---Ash---

Source(s): Tested 99th Percentile in Math, but gosh that one is hard for anyone!!!
• Anonymous

1

• 1+1=2

Furthermore, somebody with far too much time on their hands decided to prove it...

"The proof starts from the Peano Postulates, which define the natural

numbers N. N is the smallest set satisfying these postulates:

P1. 1 is in N.

P2. If x is in N, then its "successor" x' is in N.

P3. There is no x such that x' = 1.

P4. If x isn't 1, then there is a y in N such that y' = x.

P5. If S is a subset of N, 1 is in S, and the implication

(x in S => x' in S) holds, then S = N.

Then you have to define addition recursively:

Def: Let a and b be in N. If b = 1, then define a + b = a'

(using P1 and P2). If b isn't 1, then let c' = b, with c in N

(using P4), and define a + b = (a + c)'.

Then you have to define 2:

Def: 2 = 1'

2 is in N by P1, P2, and the definition of 2.

Theorem: 1 + 1 = 2

Proof: Use the first part of the definition of + with a = b = 1.

Then 1 + 1 = 1' = 2 Q.E.D.

Note: There is an alternate formulation of the Peano Postulates which

replaces 1 with 0 in P1, P3, P4, and P5. Then you have to change the

Def: Let a and b be in N. If b = 0, then define a + b = a.

If b isn't 0, then let c' = b, with c in N, and define

a + b = (a + c)'.

You also have to define 1 = 0', and 2 = 1'. Then the proof of the

Theorem above is a little different:

Proof: Use the second part of the definition of + first:

1 + 1 = (1 + 0)'

Now use the first part of the definition of + on the sum in

parentheses: 1 + 1 = (1)' = 1' = 2 Q.E.D."

Wow, he must be a real hit with the ladies...!! :)

Source(s): Doctor Rob, The Math Forum http://mathforum.org/library/drmath/view/51551.htm...
• Anonymous

11

• The same as 2+0

• 2 or 11

Source(s): nothing
• 1+1=2

1-1=0

1x1=1

1/1=1

• Anonymous
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