don steward
mathematics teaching 10 ~ 16

Saturday, 19 February 2011

eight odds

add 8 odd numbers to get a total of 20

six of the 11 solutions are shown

you might consider the numbers of 1s or the options for the high numbers, e.g. you can't use 19, 17 or 15

try to find the other solutions

[Moscow puzzles 49]

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