Digital Century

Place exactly three common mathematical symbols between the digits

1 \hspace{0.1in} 2 \hspace{0.1in} 3 \hspace{0.1in} 4 \hspace{0.1in} 5 \hspace{0.1in} 6 \hspace{0.1in} 7 \hspace{0.1in} 8 \hspace{0.1in} 9

so that the result equals 100. The same symbol can be repeated if you wish, but each repeat counts towards your limit of three. Rearranging the digits is not permitted.

Have fun 🙂

More fun later,

Nalin Pithwa

This entry was written by Nalin Pithwa, posted on October 5, 2015 at 4:38 am, filed under Fun with Mathematics and tagged . Bookmark the permalink. Follow any comments here with the RSS feed for this post. Post a comment or leave a trackback: Trackback URL.

2 Comments

  1. Anubhav C. Singh
    Posted October 13, 2015 at 1:46 pm | Permalink | Reply

    One way is:-
    123-45-67+89=100

    • nkpithwa
      Posted October 14, 2015 at 7:57 am | Permalink | Reply

      Attaching or appending digits is not considered a valid operation. The allowable operations are add, sub, mult, div, of and brackets. But, good imagination. I like it. Now, try using valid operations

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