✅ clap yay!
smart dave 😉
yep, 9 is always a mathematical magic for me... 😎
the magic box explains something like this:
in every 9 numbers (eg: 1-9) take the median as the common number and place it at the center box.
then consider the ff combinations:
1 + 5 + 9 = 15 (the common sum)
2 + 5 + 8
3 + 5 + 7
4 + 5 + 6
or
6 + 5 + 4
7 + 5 + 3
8 + 5 + 2
9 + 5 + 1
we have the arithmetic rule that sayz:
an odd number is a sum of an odd number and an even number.
since 15 (the common sum) is an odd number, it must be the sum of an odd number and an even number (resulting to another odd number), and must be added by another even number. thus, we have two even numbers and an odd number combination.
the formula now is
even + odd + even = common sum ; or we can have
2 + odd + 4 = 15 ; thus
15 - 2 + 4 = 9
15 - 2 + 6 = 7
now we can fill it in the box
2 .. 9 .. 4
7 .. 5 .. ?
6 .. ? .. ?
then we will derive with an answer: