Question

1 + 2 = 21
2 + 3 = 36
3 + 4 = 43
4 + 5 = ?
Comment Answer
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Answer 1

Answer:

May be 58

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Answer 2

Answer:

1 + 2 = 12 + 9 = 21

2 + 3 = 23 + 13 = 36

3 + 4 = 34 + 9 = 43

4 + 5 = 45 + 13 = 58

a + b = ab + 9/13

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