# View Chat Message

That's Kewl!

Way Kewl!! Any ideas on why it works? (def not a math mind here)

---

2. Key in the first three digits of your phone number (NOT the Area code) - Here you are entering part of phone number, but it is in the wrong position. To get into the correct position you need to multiply these numbers by 10,000.

3. Multiply by 80 - part way getting you to the multiplication needed to get the first three numbers into position.

4. Add 1 - this is a smoke and mirrors distractor portion of the steps

5. Multiply by 250 - you have now multiplied the first 3 digits of your phone numbe by 20,000 - except you are 250 over because you added an extra 1 and then multiplied it 250 times.

6. Add the last 4 digits of your phone number - working now on your last four digits

7. Add the last 4 digits of your phone number again. - doubling your last four digits

8. Subtract 250 - getting rid of that extra 250

9. Divide number by 2 - cutting the number to reveal your phone number

1. Grab a calculator. (you won't be able to do this one in your Head)

2. Key in the first three digits of your phone number (NOT the Area code)

Okay. You have the first three digits.

3. Multiply by 80

80 times the first three.

4. Add 1

80 times the first three plus 1

5. Multiply by 250

20,000 times the first three plus 250

6. Add the last 4 digits of your phone number

20,000 times the first 3 plus 250 plus the last four

7. Add the last 4 digits of your phone number again.

20,000 times the first 3 plus 250 plus double the last four

8. Subtract 250

20,000 times the first 3 plus double the last four, which is the same as double

your phone number

9. Divide number by 2

By definition. No trick involved. Just a few things thrown in to confuse it.

Uh oh, did we just label ourselves math nerds?

Allow me to reveal the depth of my math darkness. I don't understand the explanation.

Let's say my phone number was 123-4567

2. Key in the first three digits of your phone number (NOT the Area code) - 123 (to get the 123 into the correct position in the phone number there should be 4 zeros after it which I can get by multiplying by 10,000)

3. Multiply by 80 - 9840 (I'm part way there moving the numbers to where they need to be, but this is a step really designed to confuse you as to what is going on)

4. Add 1 - 9841 (completely unnecessary, just a part of the equation to make it look more like a trick)

5. Multiply by 250 - 2460250 (notice how the 246 is double the original 123, but now they have four numbers behind them)

6. Add the last 4 digits of your phone number - 2464817

7. Add the last 4 digits of your phone number again. - 2469384 (I'm at double my whole phone number, except I'm 250 over)

8. Subtract 250 - 2469134 (extra 250 taken care of)

9. Divide number by 2 - 1234567 (Voila)

Yep!

(Though I prefer the more politically correct "colossal math geeks")

What a bunch of killjoys! I would much prefer to believe it is magic.

Alice

Alice

Aslan(Level: 27.6 - Posts: 356)Wed, 18th Apr '07 9:51 PMUNBELIEVABLE MATH PROBLEMUNBELIEVABLE MATH PROBLEM

Here is a math trick so unbelievable that it will stump you. I would like to know who came up with this and why it works.

1. Grab a calculator. (you won't be able to do this one in your Head)

2. Key in the first three digits of your phone number (NOT the Area code)

3. Multiply by 80

4. Add 1

5. Multiply by 250

6. Add the last 4 digits of your phone number

7. Add the last 4 digits of your phone number again.

8. Subtract 250

9. Divide number by 2

Do you recognize the answer ??