Hi, I want to generate multiple sets of random numbers. The requirement is that: 1) each set have 3 random numbers; 2) the sum of the three number is always 1. how to do this? thank you, karena -- View this message in context: http://r.789695.n4.nabble.com/Random-number-generation-tp3685463p3685463.html Sent from the R help mailing list archive at Nabble.com.