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(答え)
     
(1)
1
4
1 × 1 = 1 = 1
2 2 2×2 4
(2)
1
6
1 × 1 = 1 = 1
2 3 2×3 6

(3)

1
10
1 × 1 = 1 = 1
5 2 5×2 10
(4)
1
12
1 × 1 = 1 = 1
4 3 4×3 12
(5)
1
15
1 × 1 = 1 = 1
3 5 3×5 15
(6)
1
16
1 × 1 = 1 = 1
2 8 2×8 16
(7)
1
24
1 × 1 = 1 = 1
6 4 6×4 24
(8)
1
35
1 × 1 = 1 = 1
5 7 5×7 35
(9)
1
48
1 × 1 = 1 = 1
8 6 8×6 48
(10)
1
63
1 × 1 = 1 = 1
7 9 7×9 63
     
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