Zero Sum And Difference Game

numbers

Consider this group of squares:

123789+ 5619452 + 6428642 – 2428682 – 7619432 – 3237872 = 0

When looking at the calculation above, it seems that it’s not a big deal. Although the six large squares yield zero after the calculation, it is not really that peculiar.

But, try to remove the hundred thousands place or the left-most digit of each of the six numbers and perform the calculation afterwards:

23789+ 619452 + 428642 – 428682 – 619432 – 237872 = 0

After removing the left-most digits, the answer remains zero. Now, let’s see if the pattern persists by continuing to remove the left-most digit of each of the number:

3789² + 1945² + 2864² – 2868² – 1943² – 3787² = 0
789² + 945² + 864² – 868² – 943² – 787² = 0
89² + 45² + 64² – 68² – 43² – 87² = 0
9² + 5² + 4² – 8² – 3² – 7² = 0

You can also take off the right-most digits of the numbers and the total would also be zero:

123789+ 5619452 + 6428642 – 2428682 – 7619432 – 3237872 = 0
12378+ 561942 + 642862 – 242862 – 761942 – 323782 = 0
1237+ 56192 + 64282 – 24282 – 76192 – 32372 = 0
123+ 5612 + 6422 – 2422 – 7612 – 3232 = 0
12+ 562 + 642 – 242 – 762 – 322 = 0

1+ 52 + 62 – 22 – 72 – 32 = 0

In addition, you can remove the left-most digits and the right-most digits of the numbers simultaneously and they would still be equal to zero:

123789+ 5619452 + 6428642 – 2428682 – 7619432 – 3237872 = 0
2378+ 61942 + 42862 – 42862 – 61942 – 23782 = 0
37+ 192 + 282 – 282 – 192 – 372 = 0

Note: For the last 2-digit squares, you can remove the left-most or the right-most digits of the numbers and the result would still be zero:

7+ 92 + 82 – 82 – 92 – 72 = 0

and

3+ 12 + 22 – 22 – 12 – 32 = 0

Advertisements

About Edmark M. Law

My name Edmark M. Law. I work as a freelance writer, mainly writing about science and mathematics. I am an ardent hobbyist. I like to read, solve puzzles, play chess, make origami and play basketball. In addition, I dabble in magic, particularly card magic and other sleight-of-hand type magic. I live in Hong Kong. I blog at learnfunfacts.com. You can find me on Twitter @EdmarkLaw and Facebook. My email is edmarklaw@learnfunfacts.com
This entry was posted in Mathematics and tagged , , , . Bookmark the permalink.

14 Responses to Zero Sum And Difference Game

  1. That is a curious little thing. I love these math- posts.

    Liked by 1 person

  2. Peter Klopp says:

    Simply fascinating!

    Liked by 1 person

  3. Abigail says:

    Take that, thou who think math has no creativity.

    Liked by 1 person

    • I always find it funny when I hear someone says that math does not involve creativity. Perhaps, they had boring teachers who were like creativity drainages back then so they had arrived at that conclusion. But there’s more to math than numbers, calculations, equations and memorizing formulas.

      Like

      • Abigail says:

        I suspect that the unfair perception stems from the way teachers generally present math in the classroom, at least in America, emphasizing process over concept or discovery.

        Like

  4. ellie894 says:

    Wow, that’s cool!

    Liked by 1 person

  5. Garfield Hug says:

    Sounds right🤔but what do I know as am hopeless in math🤣🤣

    Liked by 1 person

  6. papershots says:

    mind-blowing indeed!! why does that happen? is it the combination of the digits in the different numbers?

    Liked by 1 person

  7. mairi57 says:

    Uhuh🤔🤓😊

    Liked by 1 person

  8. masercot says:

    THAT is mind-blowing!

    Liked by 1 person

  9. Jack Shalom says:

    That’s Ramunujan level stuff.

    Like

What's On Your Mind?

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

w

Connecting to %s