HyperCard に、1から100までの乱数を出させてみた（100回）。結果は以下の通り。

29, 11, 84, 38, 92, 92, 75, 54, 33, 97, 37, 96, 90, 93, 9, 22, 87, 11, 42, 10, 57, 95, 68, 74, 23, 84, 39, 41, 42, 22, 37, 62, 90, 61, 79, 43, 2, 25, 77, 74, 23, 12, 41, 78, 64, 7, 97, 9, 45, 11, 37, 80, 66, 16, 29, 34, 50, 26, 51, 53, 12, 50, 34, 13, 58, 88, 93, 39, 41, 67, 29, 33, 34, 55, 25, 45, 33, 26, 3, 5, 71, 11, 48, 38, 70, 31, 37, 55, 46, 73, 62, 8, 36, 52, 29, 48, 100, 30, 50, 8

11, 29, 37 が4回。33, 34, 41, 50 が3回。8, 9, 12, 22, 23, 38, 39, 42, 45, 48, 55, 62, 74, 84, 90, 92, 93, 97 が2回。

64種類の数が登場した。

もう一度やってみる（今度は200回）。

39, 15, 2, 47, 56, 88, 77, 81, 37, 5, 78, 36, 100, 27, 88, 99, 73, 27, 80, 43, 30, 90, 88, 23, 22, 35, 49, 89, 56, 7, 68, 2, 57, 80, 16, 15, 100, 44, 11, 49, 38, 46, 5, 28, 6, 36, 55, 1, 89, 8, 83, 93, 30, 17, 14, 3, 78, 78, 17, 90, 59, 91, 38, 59, 20, 61, 87, 74, 61, 7, 71, 87, 2, 62, 68, 34, 99, 25, 63, 35, 11, 48, 66, 96, 45, 49, 60, 21, 71, 10, 100, 19, 25, 95, 67, 21, 60, 20, 67, 69, 34, 62, 24, 12, 69, 22, 59, 54, 4, 68, 75, 60, 4, 98, 97, 27, 98, 43, 19, 100, 56, 59, 30, 19, 4, 28, 55, 58, 52, 57, 22, 35, 81, 47, 49, 34, 44, 84, 38, 52, 55, 36, 5, 88, 27, 78, 73, 32, 76, 88, 94, 87, 72, 35, 89, 3, 60, 61, 17, 96, 4, 82, 87, 70, 64, 61, 8, 67, 13, 92, 67, 1, 21, 38, 63, 75, 27, 80, 91, 51, 66, 67, 77, 51, 63, 24, 55, 59, 42, 31, 25, 66, 85, 84, 75, 79, 1, 90, 43, 49

9, 18, 29, 33, 40, 41, 50, 53, 65, 86 は登場しなかった。27, 49, 59, 67, 88 が5回。

HyperCard が、どうやって（疑似）乱数を生成しているのか、私は知らない。