does 1+1 always equal 2?

Answer 1

Steve G has the best answer so far.

The answer is "not necessarily".

In binary (ie base 2) 1+1 = 10

However in binary 10 represents two, so although you don't write it with a '2' symbol it still means two units of something. But if your computer counter was very small and could only deal with a single bit, then 1+1 would show up as 0.

In real world conditions (ie away from the special rules of mathematics) think about what happens when two rain drops meet. You might think of that as 1+1 but you still have 1 (heavier) raindrop.

The point is that addition always works the same way in mathematics and 1 + 1 will always result in value 2 however it may be written in different ways. BUT mathematical addition may not accurately reflect events in the real world that look like addition.

Another example would be putting two elementary particles in a container. If the particles happen to be a positron and an electron, then you end up with ZERO elementary particles and a burst of energy.

Answer 2

First of all, the people that said not necessarily, but in maths it is are also wrong. It really depends. Good examples of this was that 1 + 1 = 10 in the binary number system. It depends also if you are considering a certain field. For example the field F2 is made up of only [0,1] when you add 1 and 1 you actually do get 0. Due to the fact that you have to consider 2mod2 in this circumstance.

Answer 3

No
If you look at numbers as objects, you can ad (and do the opposite - subtract) and multiply them - and still get numbers (by numbers I means 'whole' numbers, not fractions).
Generally, a set of objects along with these two actios and with a couple of rules (for example, the fact that there is a zero: a number that can be added to anyone without doing anything) is called a RING.

The point is, there are all sorts of rings, including one that is:
the numbers 0, 1
with the rules:
0+0 = 0
1+0 = 0+1 = 1
1+1 = 0
It obeys every rule of the regular number system, but 1+1 = 0

Answer 4

No It doesnt.

This might sound strange but it depends on the number system you are using. Some smart alec in your earlier answers said 1 + 1 = 10 to be smart but in fact he is right. In base 2 (binary) 1 + 1 does in fact = 10 because there is no such thing as 2.

We work in base 10, there are ten units, 0,1,2,3,4,5,6,7,8,9 in base 2 there are 2 units 0,1.

In base 2. 10 means "2" 20 means "4", 100 means "20". Its the number of 2's you have.

Hope this helps a little.

Answer 5

LET US SEE ..1+1=2 yes it dose seam to
equal 2 I done it a few Times before ..and 7 out of 10 it ended up equalling 2 .so it must be correct

Answer 6

Yes, unless you change the definitions of 1, 2, plus or equals

Answer 7

I have seen in computer programs where 1 + 1 = 3.

What happened was that there was a decimal portion but the screen format was for integers. The computer added up 1.5 and 1.5 and that came to 3. But on the screen it just dropped the decimals so it showed 1 and 1 make 3.

Answer 8

It all depends on what base the numbers are in.

Let's try a binary sum.

1(base 2) + 1(base 2) = 10 (base 2)

These (base 2) are meant to represent the little 2 subscript you use to indicate you are using binary numbers.

So in binary, we can say that

1 + 1 = 10.

Answer 9

Yes and No....It always equals 2 when you're talking mathematics..but if you're talking about sex.....sometimes 1+1=3 or 4...or even 5... if we're talking triplets.

Answer 10

Well in binary 1+1 = 10

Which while technically is still 2, isn't 2.