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Posted on Jan 02, 2017

I need some help here. If we take the sum of 2 integers from 1 to 9, and they can be the same number, the maximum number is 18. I don't know how you are supposed to get four consecutive digits, unless you pad the number with zeros. Am I missing something?

Good luck,

Paul

Good luck,

Paul

May 29, 2016 | Office Equipment & Supplies

I don't think you can do it! Could you check your numbers.

If we are using the numbers 1-9 once and only once in a 3x3 magic square, the sum of the rows + the sum of the columns should be 90, since 1+2+3+4+5+6+7+8+9 in the rows adds up to 45 and 1+2+3+4+5+6+7+8+9 in the columns adds up to 45.

When trying to solve, the magic number seem to be the sums 24 and 10. To get 24, the only three numbers that add to 24 are 7 + 8 +9. Similarly to get 10, the lowest numbers re 1 and 2 and the smallest big number to use is 7. I then ran out of number trying to get 21, 13 and 15 sums.

Good luck,

Paul

If we are using the numbers 1-9 once and only once in a 3x3 magic square, the sum of the rows + the sum of the columns should be 90, since 1+2+3+4+5+6+7+8+9 in the rows adds up to 45 and 1+2+3+4+5+6+7+8+9 in the columns adds up to 45.

When trying to solve, the magic number seem to be the sums 24 and 10. To get 24, the only three numbers that add to 24 are 7 + 8 +9. Similarly to get 10, the lowest numbers re 1 and 2 and the smallest big number to use is 7. I then ran out of number trying to get 21, 13 and 15 sums.

Good luck,

Paul

May 21, 2015 | Office Equipment & Supplies

If by "The sum of it's hundreds num is 4" you mean "The sum of its hundred number and ones number" the answer is 9173.

Jun 20, 2011 | Office Equipment & Supplies

A number is 3 more than 4 the sum of its digits. If the digits are interchanged, the resulting number is 9 more than the given number. Find the number.

Aug 05, 2010 | Brookstone Luggage & Travel

Are you speaking of "Exp. Delay mode"? That is found in Custom Settings Menu number 31. Page 99 in the D80 manual.

Jul 30, 2010 | Nikon D80 Digital Camera with 18-135mm...

no is 24. (2+4)*4=24 ie sum of digits*4 gives the original number

Feb 22, 2010 | Vivendi Excel@ Mathematics Study Skills...

a 2 digit number is a tens place digit plus a singles place digit:

10x + y

if you reverse the 2 digits, it looks like:

10y + x

So, the original 2-digit number, plus another 18, gets the 2nd 2-digit number:

10x + y + 18 = 10y + x

AND adding the 2 digits gets 14:

x+y = 14

Solve for x: x = 14-y

Substitute x back into the previous equation and solve for y:

10 (14 - y) + y + 18 = 10y + (14 - y)

140 - 10y + y + 18 = 10y + 14 -y

158 - 9y = 9y + 14

144 - 9y = 9y

144 = 18y

y = 8

So if y = 8, x must equal 6: x+ y = 14 --> 6 + 8 = 14

And the original number, 68, if you reverse the digits --> 86

86 is 18 greater than 68.

I love math!

10x + y

if you reverse the 2 digits, it looks like:

10y + x

So, the original 2-digit number, plus another 18, gets the 2nd 2-digit number:

10x + y + 18 = 10y + x

AND adding the 2 digits gets 14:

x+y = 14

Solve for x: x = 14-y

Substitute x back into the previous equation and solve for y:

10 (14 - y) + y + 18 = 10y + (14 - y)

140 - 10y + y + 18 = 10y + 14 -y

158 - 9y = 9y + 14

144 - 9y = 9y

144 = 18y

y = 8

So if y = 8, x must equal 6: x+ y = 14 --> 6 + 8 = 14

And the original number, 68, if you reverse the digits --> 86

86 is 18 greater than 68.

I love math!

Sep 01, 2009 | Google Computers & Internet

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