Soetimes you need a formula for working out a particular number – Roll a d20 and see what you can use and what result you get when you work it out!

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D20,Formula
1 , 1
2 , 2 – 1
3 , 3 + 3 + 3 – 3 – 3 – 2
4 , -97 + 98
5 , 2 + 2 – 3
6 , 1 X 1 X 1 X 1
7 , 7 – 6
8 , 8 / 8
9 , 9 + 9 – 17
10 , 10/10
11 , 11 – 10
12 , 12 – 11 – 10 + 9 – 8 + 9
13 , (169/13)/13
14 , (14/7) – 1
15 , ((15+15)/3)/10
16 , 16 + 16 – 32
17 , (1 + 7) + (7 + 1) – 15
18 , 18 – 19 + 20 – 21 + 22 – 23 + 4
19 , V – IV
20 , 2

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