Example GIF

Identify the logic - Math Riddle

117.Math Riddles
Can you identify the logic behind the equation below and solve the puzzle by completing the equation? 
12 + 13 + 7 = 1, 15 + 16 + 11= 2, 17 + 18 + 16 = ?
  • A.5
  • B.4
  • C.7
  • D.9
    • Explanation :  
      
      Logic Used: Sum the numbers and then subtract the two digits to get the desired answer.
      12 + 13 + 7 => 32 => 3-2 => 1
      15 + 16 + 11 =>42 => 4-2 => 2
      17 + 18 + 16 = 51 => 5-1 => 4