IF11+12 =3212+13=5213+14=7215+16=???
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11+12 = 23 reversing the digits 11+12 = 32
Similarly,
12+13 = 25 which becomes 52
13+14 = 27 which becomes 72
15+16 = 31 which becomes 13
So 13 is the answer
Similarly,
12+13 = 25 which becomes 52
13+14 = 27 which becomes 72
15+16 = 31 which becomes 13
So 13 is the answer
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