Magic Square Problem

Logic Level 2

What is the value of $x$ in the order 3 magic square if the magic constant is 19?

Definition : the magic constant of a magic square has the value of the sum of all rows, diagonals, and columns of the square.

4\frac13

2\frac13

10 \frac13

6\frac13

1 solution

Drex Beckman
Jan 11, 2016

Here is something about order 3 magic squares. They are in this form:

If we look at the 2nd row, for example, we know it must add to 19: $x+4+x+x-4=19=3x$ We get a result of $x = 19/3=6\frac{1}{3}$ .

Please change the answer from $6\frac {2}{3}$ to $6\frac {1}{3}$

Shaun Leong - 5 years, 4 months ago

Thanks @Shaun Leong for catching the problem. I didn't notice until now. I changed the problem.

Drex Beckman - 5 years, 4 months ago

Should the solution is $6\frac{1}{3}$ ?

Tran Hieu - 5 years, 4 months ago

Yeah, @Shaun Leong is correct, I messed up the multiple choice answers. Since I cannot modify the multiple choice, I just changed the question. Sorry for that, I did not even notice until now.

Drex Beckman - 5 years, 4 months ago

Thanks. @Shaun Leong @Tran Hieu I've updated the problem statement and answer choices.

In future, if you spot any errors with a problem, you can “report” it by selecting "report problem" in the “line line line” menu in the top right corner. This will notify the problem creator who can fix the issues.

Brilliant Mathematics Staff - 5 years, 4 months ago

Magic Square Problem

1 solution

0 pending reports