#15

You must multiply two numbers together, then add or subtract a third number, to achieve the target answer of 7. The three numbers used in each separate calculation must all be unique digits from 1-9.

As an example, one such way is (4 x 3) – 5 = 7. Can you list 11 other ways of making 7?

[Note.  (4 x 3) - 5 = 7  and  (3 x 4) - 5 = 7  counts as just ONE way]

MathelonaLogo

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

2 Responses to #15

  1. awizzbang says:

    1×2+5=7
    1×3+4=7
    1×4+3=7
    1×5+2=7
    1×9-2=7
    2×3+1=7
    2×4-1=7
    2×5-3=7
    2×6-5=7
    2×8-9=7
    3×5-8=7

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Your email address will not be published.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>