You can duplicate this in Maple 11 or Maple 12: restart; L:=Array(1..10, j->rand(0..1)()); L := [0, 0, 0, 1, 0, 1, 1, 1, 0, 1] restart; L:=Array(1..10, j->rand(0..1)()); L := [0, 0, 0, 1, 0, 1, 1, 1, 0, 1] restart; L:=Array(1..10, j->rand(0..1)()); L := [0, 0, 0, 1, 0, 1, 1, 1, 0, 1] restart; L:=Array(1..10, j->rand(0..1)()); L := [0, 0, 0, 1, 0, 1, 1, 1, 0, 1] restart; L:=Array(1..10, j->rand(0..1)()); L := [0, 0, 0, 1, 0, 1, 1, 1, 0, 1] The Array is always the same. If you restrat Maple you will get a different random array but then it will always be reproduced. Anybody have any idea what is happening? thanks, rick

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