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Posted on Jan 02, 2017

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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

450=9*5*10=9*50

9*50/3=3*50=150

To verify if a number is divisible by 3, add the digits in the number. If the sum of digits is divisible by 3, then thumber is also divisible by 3.

Sum of digits in 450 =4+5+0 =9, divisible by 3, so 450 is also divisible by 3.

9*50/3=3*50=150

To verify if a number is divisible by 3, add the digits in the number. If the sum of digits is divisible by 3, then thumber is also divisible by 3.

Sum of digits in 450 =4+5+0 =9, divisible by 3, so 450 is also divisible by 3.

Jul 06, 2014 | Office Equipment & Supplies

1+2+3 is 6.

4+5+6 is 15.

7+8+9 is 24.

That's three sums, using each number only once.

There's more to the problem than this, isn't there? Perhaps making them add up to the SAME sum?

4+5+6 is 15.

7+8+9 is 24.

That's three sums, using each number only once.

There's more to the problem than this, isn't there? Perhaps making them add up to the SAME sum?

Sep 13, 2012 | Office Equipment & Supplies

No. Odd numbers less than 9 is 1, 3, 5, 7. Their sum is 1+3+5+7 = 16.

May 15, 2011 | Computers & Internet

1

2

3

4

5

6

7

8

9

153

370

371

407

1634

8208

9474

54748

92727

93084

548834

Jan 06, 2011 | Computers & Internet

this would be explained on the basis of two FACTS below.......

sum of two odd numbers are always even and

sum of to even numbers are also always even

then how 6 odd numbers (consider 3 pairs, 9 5 3 1 being odd numbers) can make an odd number 21..!!

SO SIMPLE

Make your basics strong...

sum of two odd numbers are always even and

sum of to even numbers are also always even

then how 6 odd numbers (consider 3 pairs, 9 5 3 1 being odd numbers) can make an odd number 21..!!

SO SIMPLE

Make your basics strong...

Aug 14, 2010 | Computers & Internet

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

Hi
5+3=28, 9+1=810, 8+6=214, 5+4=19, 38+20=1858

First find difference and then sum............. If we take 5+3 =28, 5-3=2 and 5+3=8 so answer is 28 like wise

7+3 = 410 So answer is 410

First find difference and then sum............. If we take 5+3 =28, 5-3=2 and 5+3=8 so answer is 28 like wise

7+3 = 410 So answer is 410

Jul 16, 2010 | Vivendi Excel@ Mathematics Study Skills...

The two numbers 3 and 24

3 multiplied by 24 =72

24 divided by 3 =8

Enjoy, and thanks for choosing Fixya!

3 multiplied by 24 =72

24 divided by 3 =8

Enjoy, and thanks for choosing Fixya!

Mar 20, 2009 | M2K Garfield: It's All About Math Math...

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