Maak de som uit de tafel van 11 kloppend
Tafels
1.
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11
3
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2.
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11
2
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3.
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10
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4.
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8
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11
8
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6.
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11
10
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11
9
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8.
×
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11
5
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9.
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11
8
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10.
×
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11
9
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11.
×
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11
4
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12.
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11
3
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13.
×
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11
7
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14.
×
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11
10
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11
9
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×
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11
9
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17.
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11
1
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18.
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11
8
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11
4
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20.
×
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11
8
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21.
×
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11
1
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22.
×
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11
8
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23.
×
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11
1
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24.
×
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11
1
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