todays math fun is brought to you by the letters W T and F

Quote:

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Originally Posted by muchspl2

sure

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OK. It can be proved by simplification.

The first step is multiplying by 8 (2X2X2); cancel out step 7 by removing one of the twos.

Step 5 is also cancelled because you've gotten rid of the divisor of two at the end so you must not add the last three digits a second time.

This means that step seven is gone, step 5 is gone and you're multiplying by 4 in the first instance.

We now have

1 Multiply first 3 digits by 4
2 Add 1
3 Multiply by 250
4 Add last three digits
5 Subtract 250

Still works, right?

Steps 2 and 5 cancel themselves out since adding one before multiplying by 250 has the effect of adding 250 to the figure.

We now have

1 Multiply first 3 numbers by 4
2 Multiply by 250
3 Add last 3 digits


Since 4*250= 1000 we may as well simplify further and get rid of step 2 by making step one the first 3 numbers*1000

Now we're left with

1 Multiply the first 3 numbers by 1000
2 Add last 3 digits.

The above is moving the 3 digit number 3 decimal places to the left and slotting in the last 3 digits.

=> It works for everyone.

Note: It's the same principle for 7 digit numbers, it just cancels down to multiplying by 10000 rather than 1000 in it's simplest form.

gold star for showing your work, congratulations you screwed up the bell curve and will make every one else have lower grades.

I don't have a phone. :(

Quote:

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Originally Posted by Withcheese

I don't have a phone. :(

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Don't be sad. It still works for you too. With zeros.

Thanks!!! :crying:

I finally know my number now............... :(

Is there a reverse process, where i forget it again??? :helpsmili

Quote:

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Originally Posted by manker

OK. It can be proved by simplification.

The first step is multiplying by 8 (2X2X2); cancel out step 7 by removing one of the twos.

Step 5 is also cancelled because you've gotten rid of the divisor of two at the end so you must not add the last three digits a second time.

This means that step seven is gone, step 5 is gone and you're multiplying by 4 in the first instance.

We now have

1 Multiply first 3 digits by 4
2 Add 1
3 Multiply by 250
4 Add last three digits
5 Subtract 250

Still works, right?

Steps 2 and 5 cancel themselves out since adding one before multiplying by 250 has the effect of adding 250 to the figure.

We now have

1 Multiply first 3 numbers by 4
2 Multiply by 250
3 Add last 3 digits


Since 4*250= 1000 we may as well simplify further and get rid of step 2 by making step one the first 3 numbers*1000

Now we're left with

1 Multiply the first 3 numbers by 1000
2 Add last 3 digits.

The above is moving the 3 digit number 3 decimal places to the left and slotting in the last 3 digits.

=> It works for everyone.

Note: It's the same principle for 7 digit numbers, it just cancels down to multiplying by 10000 rather than 1000 in it's simplest form.

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:huh:

slow day at work was it manker? :rolleyes:

Quote:

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Originally Posted by (>Zero Cool<)

:huh:

slow day at work was it manker? :rolleyes:

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You mean that the world doesn't stop for everyone when a hawt logic problem presents itself! Unbelievable!

Quote:

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Originally Posted by manker

You mean that the world doesn't stop for everyone when a hawt logic problem presents itself! Unbelievable!

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:lol: or :crying:

basically I don't know whether to laugh with you or cry for you on that one :ermm:

21592 :01: