Answer:
3.5
Explanation:
1 x 2 = 2
2 x 6 = 12
3 x 4 = 12
4 x 1 = 4
5 x 2 = 10
6 x 5 = 30
1+1+2+2+2+2+2+2+3+3+3+3+4+5+5+6+6+6+6+6 = 70
70 / 20 = 3.5
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