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11+12=(1+2)(1+1)=32 not mathematical
112 is the answer



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14+15 = 92

15+16 = 112

Adding 20 every time.
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Actually there are two logics for this question 11 +12 = 23 where the last digit came to first and the first came to the last. and this logic replies everywhere.that's why 15 +16 = 31 which in inverse gets to be 13. and the second logic is the difference of 20 no.s.

so to ur question there are 2 answers and that are  13 by the fist logic and 112 by the other logic.
Hope this helps u !!
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