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    What is the missing number in the square 15 3 7 19 8 11 5 2 7 15 12 4 14 7 14 ?

    Question #24844. Asked by key west. (Dec 05 02 2:38 AM)


    Barrow boy

    		21. Because 14-7+14=21.

    Dec 05 02, 12:19 PM
    sequoianoir

    		I assume the square you mean is:
    15 3 7 19
    8 11 5 2
    7 15 12 4
    14 7 14 ?

    Then either going across
    15 - 3 + 7 = 19
    8 - 11 + 5 = 2
    7 - 15 + 12 = 4
    14 - 7 + 14 = 21

    or going downwards
    15 3 7 19
    - - - -
    8 11 5 2
    + + + +
    7 15 12 4
    = = = =
    14 7 14 21

    Dec 05 02, 1:06 PM

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