document.write( "Question 622987: Hi, \n" );
document.write( "My question is about a variant of the ball - urn problem. We have 8 black and 2 white balls. I take out ALL of them one after the other and line them up. I would like to know how likely it is that the 2 white ones are found at position e.g. 2 and 3 or any other 2 consecutive positions. \n" );
document.write( "There is a practical background like serial analysis behind this question. Ten sequential data points should contain 2 that are sticking out at a given position to meet certain requirements. This event should be better than chance. \r \n" );
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document.write( "I'd appreciate your thoughts, \r \n" );
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document.write( "Walter \n" );
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