Beach Day by Rodger Bliss
May 2024
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Mind and Math

Mind and MathYou have to buy 5 books of different price so that the price equals to 20.
conditions:
#1:  you cant buy book whose price is 0
#2: you cant buy buy books of decimal such as 2.5

Thank you Kashedul for your submission!

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5 guesses to Mind and Math


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  • Taylor Mali

    $1
    $2
    $3
    $4
    $10

    OR

    $2
    $3
    $4
    $5
    $6

  • Max

    There are 5 ways to do it:
    Prices of 2,3,4,5,6; 1,3,4,5,7; 1,2,4,5,8; 1,2,3,5,9; or 1,2,3,4,10.

  • Togram

    $2, $3,, $4, $5 ,$6+$20

  • Brent

    In addition to the two ways Taylor suggests, and the three additional ways Max added, you could also use the following two “Brent” combinations:
    $1, $2, $3, $6, $8
    $1, $2, $4, $6, $7

    So full seven set of combinations is:
    $1, $2, $3, $4, $10
    $1, $2, $3, $5, $9
    $1, $2, $3, $6, $8
    $1, $2, $4, $5, $8
    $1, $2, $4, $6, $7
    $1, $3, $4, $5, $7
    $2, $3, $4, $5, $6

  • Taylor you are correct!
    The first book price wil be 1, second book price will be 2, 3rd book price will be 4 and 5th book price will be 10