Science Fair Test 3

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1.
1 point
8 x 18
2.
1 point
18 x 7
3.
1 point
19 x 18
4.
1 point
12 x 18
5.
1 point
18 x 5
6.
1 point
14 x 18
7.
1 point
18 x 1
8.
1 point
16 x 18
9.
1 point
18 x 13
10.
1 point
18 x 15
11.
1 point
18 x 11
12.
1 point
18 x 17
13.
1 point
18 x 18
14.
1 point
18 x 9
15.
1 point
18 x 3
16.
1 point
18 x 20
17.
1 point
6 x 18
18.
1 point
4 x 18
19.
1 point
2 x 18
20.
1 point
10 x 18