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Mathematics, 21.11.2020 02:20 julie47d

If
1+5=18
2+7=27
3+9=36
5+10=45
Then 4+20=??

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Answers: 3

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You know the right answer?
If
1+5=18
2+7=27
3+9=36
5+10=45
Then 4+20=??...
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