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# Why is 1 plus 1 2?

# What 2 plus 1?

2 plus 1 equals 3. 2 + 1 = 3 for the simple fact that if you had 2 apples and someone gave you another one. you would have three apples.

# What is 1 plus 2 plus 3 plus ..to 100?

1+2+3.......+100 forms an ending arithmetic progression. There are two ways this can solved as follows- 1) the old an boring way of adding them up and getting an answer of 50…50. 2)This step will involve the knowledge of Arithmetic Progressions. An AP is such a sequence of the numbers that each number will have common difference between it and its predecessor. There is a certain formula given for solving the sum of the terms of an AP, which is S=n(T+a)/2 where n is the number of terms of he AP, T is the final term and a is the first term. Putting the values- S=100(100+1)/2= 50(101)= 5050. Practically this method can be explained in this fashion- If you add one with 100, you get 101. Similarly 99+2= 101, 98+3=101.......till 50+51=100. We get 50 such pairs, therefore the sum os 50 into 101=5050 1+2+3...50+51......+98+99+100=(1+100)+(2+99)+(3+98)........+(50+51)= (101)+(101)......50 times, therefore 1+.......100=50(101)=5050

# 1 plus 1 equals 2 why?

The explanation as to why 1+1=2 is complicated and I hope you understand it. It's mysterious, though, because first you have to come to a definition of what "1" means, what "2…" means, and even what "+" & "=" means! It's a lot harder than you think. The proof goes something like this (remember, it depends on set theory): We start off by defining the natural numbers (ie positive integers) in terms of sets. For any set S, define a "successor" function f as f(S) = {S, {S}} ie, the set containing: S and the set containing S. Then we define the natural integers as such: Define the number 0 to be the empty set, which I'll write here as O. Then each successive integer (ie "n+1") is just the preceding integer put through the successor function, ie 1 = {O, {O}} 2 = {O, {O, {O}}} 3 = {O, {O, {O, {O}}}} and so on. Then 1+1=f(1)={O, {O, {O}}}=2

# Why does 1 plus 1 equal 2?

We assign the symbol "1", pronounced by the word sound "wun", to a single entity, for purpose of letting all know that whatever that entity is, it is a single entity. If the…n another entity appears, by any means, and we wish to describe that there is now an additional single entity, we assign the symbol "2", pronounced by the word sound "too". Note that the entities may each be the same, as in "2" apples. Or the entities may be different, say an apple and orange, but we simply wish to describe how many entities of any type are there. Whenever we place a single entity next to another single entity, we call the combined entities "2", and know that there are thus that many entities there, regardless as to any other characteristics they may have. We then decided that if we had "2" entities, and added another single entity, still called "1", that we'd call the end result three. And so on. Thus 1 plus 1 equals 2 because "1" stands for a single entity, and when we add it to another single entity, we've agreed to label that "2". = 2

# What is 2 plus 1?

Three To write it out and work the problem: 2 + 1 = 3 Or, for a visual demonstration: Lay two coins on the desk in front you. Get one more coin from somew…here else and lay it (ie., add it) next to the other coins already on the desk. There will now be a total of three coins. 3

# What is negative 1 plus 2?

-1+2=1 If you have a negative number and a positive number subtract them. If the negative number is higher than the other number then it is negative. To change the expre…ssion but keep the answer the same you can do 2-1=1. Take out the addition sign and switch the numbers.

# What is the formula equals 1 plus 1 equals 2?

1 + 1 = 2 1 = 2 - 1 1 + 1 - 2 = 0 0 = 2 - 1 - 1

# What is 1 plus 2?

3. .
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Having done extensive research, and contacting several consultants, I believe that 3 is the correct answer. However, it is fun to consider that we are… making all kinds of assumptions. Yes, they are assumptions that are part of the standard arithmetic system. We are assuming that we really know what is meant by 1, 2 and 3, and we are also requiring that the "1" and the "2" be exclusive. Couldn't there be a system where exclusivity is indeterminate, or somehow has to be determined before an addition can take place? And what's addition all about, anyway?

# What is the mean of 2 plus 2 plus 2 plus 2 plus 2 plus 2 plus 1 plus 2 plus 2 plus 2 plus 1 plus 2 plus 2 plus 2 plus 2 plus 2 plus 2?

To find the mean (or average) you first add up the numbers you have. NOTHING 1.88

# What is 1 over 4 plus 1 over 2?

3 over 4

# What is 1 over 2 plus 1 over 3?

1/2+ 1/3=1 1/6

# 2 cot x plus 1 equals -1?

2 cot(x) + 1 = -1 2 cot(x) = -2 cot(x) = -1 cos(x)/sin(x) = -1 cos(x) = - sin(x) x = 135°, 315°, 495°, ... another one eve…ry 180 degrees

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In Science

# In base 2 what does 1 plus 1 equal?

10.

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# When is 1 plus 1 greater than 2?

Never - unless this is a riddle of some sort. And unless "plus" is defined in some non standard way, 1 plus 1 is NOT eleven.

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In Science

# What is 1 plus 1 minus 2?

1 + 1 - 2 = 0

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In Science

# What is 2 and 1 third plus 1 and 1 half?

3 and five sixths.

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# How does 1 plus 1 equal 2?

2 is defined to be the number that is 1 more than 1, so that 1 + 1= 2 by definition.