<p>This app mimicks drawing from a bag containing 100 similar objects : <spanstyle="color:red"> 1 red </span> ,
<spanstyle="color:blue">1 blue</span> , <spanstyle="color:green">8 green</span> and 90 black ones. You can also try with a real bag for a start !
<spanstyle="color:blue">1 blue</span> , <spanstyle="color:green">8 green</span> and 90 black ones. If you like, try with a real bag to start off !
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<p> The idea is to discuss about flood occurence for one year or a span of several years (with successive draws) : <spanstyle="color:red">a red marble (1 chance in 100) means a flood with a return period SUPERIOR to 100 years</span> ,