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Question 50

If 8 + 12 = 2, 7 + 14 = 3 then 10 + 18 = ?

Solution

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8+12 =( 20 = 2+0) = 2
7+14 =( 21 = 2+1) = 3
10+18= (28= 2+8) = 10
 

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