DAY 10

This number puzzle was made famous by French writer, George Perec, and very similar to many of my other number puzzles at 7puzzleblog.com.

We invite you to use seven 7′s (7, 7, 7, 7, 7, 7 and 7) once each, with + – × and ÷ available, to make all the numbers from 1-9.

For instance, to make 7, you could simply do:

  • 7 + 7 + 7 + 7  7  7  7 = 7,  or perhaps
  • 7 × (7÷7) × (7÷7) × (7÷7) = 7

Can you make the remaining target answers from 1-9?

MathelonaLogo

This entry was posted in 7puzzleblog.com. Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>