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(答え)
     
(1)
1
3
1 - 1 = 3-1 = 2 = 1
2 6 6 6 3
(2)
7
12
3 - 1 = 9-2 = 7
4 6 12 12

(3)

1
3
11 - 2 = 11-6 = 5 = 1
15 5 15 15 3
(4)
1
3
7 - 1 = 7-3 = 4 = 1
12 4 12 12 3
(5)
1
2
7 - 1 = 7-2 = 5 = 1
10 5 10 10 2
(6)
1
4
2 - 5 = 8-5 = 3 = 1
3 12 12 12 4
(7)
5
18
5 - 5 = 15-10 = 5
6 9 18 18
(8)
10
21
9 - 1 = 27-7 = 20 = 10
14 6 42 42 21
(9)
1
5
2 - 7 = 10-7 = 3 = 1
3 15 15 15 5
(10)
1
3
3 - 5 = 9-5 = 4 = 1
4 12 12 12 3
     
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