Math Fun!!!

10 + 10 x 0 =

  • 0

    Votes: 23 53.5%

  • 10

    Votes: 17 39.5%

  • 20

    Votes: 3 7.0%

  • Other

    Votes: 0 0.0%
  • Total voters
    43
Daredevel7 said:
:) This is something that certain posters probably will use in order to deem you "dumb" or "respectable".

Not me!

More of a test to see if anyone remembers a TINY TINY rule that we all probably learned at some point in high school. (This should be a hint, btw...) It also points out who is currently in high school! :)
Click to expand...

Uh, crap. Order of Operations. D'oh! I answered zero, but, I think the answer is 10.

But, I also have dyscalculia, so if I'm wrong.... ahh, I'm just wrong! :laugh2:
 
jillio said:
Oh, dang. Order of operations! Can I change my answer?

That's what happens when your math is limited to running stats on SPSS!:lol:
Click to expand...

GMTA! It got me, also. I realized it after I read Vickie's post. Then, it occured to me that we were dealing with Order of Operations. I vaguely remember being taught that, but, just vaguely!


This thread is going to result in some interesting input, methinks. :lol:
 
jillio said:
I missed it too, at first. But I still manage to hold down a couple of jobs.:wave:

The minute I saw PFH's answer, I said, "Jillio, you dumb ass!" LOL
Click to expand...

When I saw Vickie's post, I said almost the same thing.. "Ocean, you idiot!" lol
 
Have you guys ever seen those "proofs that prove" that 2=1? It goes something like this:

1. Let a and b be equal non-zero quantities (such as a = 4, and b = 2, but we will call them a and b for now)

a = b

2. Multiply through by a

a^2 = ab

3. Subtract b^2

a^2 - b^2 = ab - b^2

4. Factor out both sides

(a - b)(a + b) = b(a - b)

5. Divide out (a - b)

a + b = b

6. Since a = b

b + b = b

7. Combine like terms on the left

2b = b

8. Divide by the non-zero b

2 = 1

Is this true? If not, where did it all go wrong?
 
Another one very similar to my post above, but more simple to figure out where it went wrong:

1. Assume that x equals zero. Then the following equation is definitely true.

x ( x-1 ) = 0

2. Divide x out.

(x -1) = 0

3. Move 1 to the right side.

x=1

4. x = 0, therefore:

0=1
 
Daredevel7 said:
Have you guys ever seen those "proofs that prove" that 2=1? It goes something like this:

1. Let a and b be equal non-zero quantities (such as a = 4, and b = 2, but we will call them a and b for now)

a = b

2. Multiply through by a

a^2 = ab

3. Subtract b^2

a^2 - b^2 = ab - b^2

4. Factor out both sides

(a - b)(a + b) = b(a - b)

5. Divide out (a - b)

a + b = b

6. Since a = b

b + b = b

7. Combine like terms on the left

2b = b

8. Divide by the non-zero b

2 = 1

Is this true? If not, where did it all go wrong?
Click to expand...

Daredevel7 said:
Another one very similar to my post above, but more simple to figure out where it went wrong:

1. Assume that x equals zero. Then the following equation is definitely true.

x ( x-1 ) = 0

2. Divide x out.

(x -1) = 0

3. Move 1 to the right side.

x=1

4. x = 0, therefore:

0=1
Click to expand...

Simple. Division by zero. You can't divide any number by zero which is undefined if we are talking about it algebraically (but in calculus......it can mean something else.....the concept of infinity ;) )
 
Daredevel7 said:
Have you guys ever seen those "proofs that prove" that 2=1? It goes something like this:

1. Let a and b be equal non-zero quantities (such as a = 4, and b = 2, but we will call them a and b for now)

a = b

2. Multiply through by a

a^2 = ab




3. Subtract b^2

a^2 - b^2 = ab - b^2

4. Factor out both sides

(a - b)(a + b) = b(a - b)

5. Divide out (a - b)

a + b = b

6. Since a = b

b + b = b

7. Combine like terms on the left

2b = b

8. Divide by the non-zero b

2 = 1

Is this true? If not, where did it all go wrong?
Click to expand...


No, it is not true. Go to #3 and do it this way...

(A times A) minus (B times B) equals (A times B) minus (B times B)

since it has already been stated that 'a=b'..and making them any number but using the example 4 here....then the above becomes

(4 times 4) minus (4 times 4) equals (4 times 4) minus (4 times 4)

In effect making it Zero equals Zero
 
Daredevel7 said:
Have you guys ever seen those "proofs that prove" that 2=1? It goes something like this:

1. Let a and b be equal non-zero quantities (such as a = 4, and b = 2, but we will call them a and b for now)

a = b

2. Multiply through by a

a^2 = ab

3. Subtract b^2

a^2 - b^2 = ab - b^2

4. Factor out both sides

(a - b)(a + b) = b(a - b)

5. Divide out (a - b)

a + b = b

6. Since a = b

b + b = b

7. Combine like terms on the left

2b = b

8. Divide by the non-zero b

2 = 1

Is this true? If not, where did it all go wrong?
Click to expand...

I'm still trying to figure out why any number to 0 power equals 1.:dizzy: The best I've ever gotten from a math prof was "Because that is the rule." I WANT TO KNOW WHY!! THERE HAS TO BE A WHY BEHIND ANY RULE!!
 
Daredevel7 said:
Have you guys ever seen those "proofs that prove" that 2=1? It goes something like this:

1. Let a and b be equal non-zero quantities (such as a = 4, and b = 2, but we will call them a and b for now)

a = b

2. Multiply through by a

a^2 = ab

3. Subtract b^2

a^2 - b^2 = ab - b^2

4. Factor out both sides

(a - b)(a + b) = b(a - b)

5. Divide out (a - b)

a + b = b

6. Since a = b

b + b = b

7. Combine like terms on the left

2b = b

8. Divide by the non-zero b

2 = 1

Is this true? If not, where did it all go wrong?
Click to expand...

div of 0
 
Sheila and PFH are correct about dividing by zero for those two mathematical fallacies examples. :)
 
I keep thinking this is a joke. Does anyone else feel that way?

No matter what the numbers are, when you multiply ANYTHING by zero, it makes the result ZERO. Ten billion multiplied zero times means ZERO. This is 5th grade stuff.

Hope I didn't wreck the fun here.
 
saywhatkid said:
I keep thinking this is a joke. Does anyone else feel that way?

No matter what the numbers are, when you multiply ANYTHING by zero, it makes the result ZERO. Ten billion multiplied zero times means ZERO. This is 5th grade stuff.

Hope I didn't wreck the fun here.
Click to expand...

Read it like this... 10+(10x0) = ___
 
posts from hell said:
Read it like this... 10+(10x0) = ___
Click to expand...

If the parenthesis have been put in place at the begnining, then yes that would be correct but since they were not, the rule is to start from the left and work your way to the right until you get the answer. So, zero is the answer without the parenthesis.
 
posts from hell said:
That is always the rule, even if the parentheses are not there.
Click to expand...
Obviously I did not attend college, and math was way down my list of electives in HS. Of course, there are some that would say they knew that by reading my other posts. :giggle:
 
shel90 said:
If the parenthesis have been put in place at the begnining, then yes that would be correct but since they were not, the rule is to start from the left and work your way to the right until you get the answer. So, zero is the answer without the parenthesis.
Click to expand...

Alright.
 
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