Hi.
In this case it would be the range "A2: I12" where numbers can not be repeated.

65 58 28 6 39 49 89 26 31
80 24 7 75 37 66 42 69 3
48 9 8 32 51 63 67 11 45
10 0 18 85 4 50 64 88 44
38 81 93 1 27 41 5 16 73
76 82 21 92 35 23 61 13 46
86 74 56 96 71 29 47 33 43
15 36 97 91 59 14 77 72 20
68 87 79 62 83 17 19 22 84
53 34 95 57 12 25 55 40 54
70 98 30 90 60 52 2 94 78