From Russia with love of numbers !!

Problem:

There are three ways to add four odd numbers and get 10:

1+1+3+5=10

1+1+1+7=10

1+3+3+3=10

Changes in the order of numbers do not count as new solutions.

Now add eight odd numbers to get 20. To find all eleven solutions, you will need to be systematic.

-Nalin Pithwa

PS: I found this gem in a Russian book (translated).

2 Comments

  1. Anubhav C. Singh
    Posted August 25, 2016 at 2:21 pm | Permalink | Reply

    1+1+1+1+1+1+1+13=20
    1+1+1+1+1+1+3+11=20
    1+1+1+1+1+1+5+9=20
    1+1+1+1+1+1+7+7=20
    1+1+1+1+1+3+3+9=20
    1+1+1+1+1+3+5+7=20
    1+1+1+1+1+5+5+5=20
    1+1+1+1+3+3+3+7=20
    1+1+1+1+3+3+5+5=20
    1+1+1+3+3+3+3+5=20
    1+1+3+3+3+3+3+3=20

  2. Posted August 25, 2016 at 3:10 pm | Permalink | Reply

    vv good ! Keep it up !!

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