If 3 plus 18 equals 7 7 plus 14 equals 3 6 plus 18 equals 4 8 plus 112 equals 15 then 9 plus 135 equals?
9 plus 135 = 16
The series is formed by dividing the second number by the first
number and then adding 1 to the quotient.
18 ÷ 3 = 6 : 6 + 1 = 7
14 ÷ 7 + 2 : 2 + 1 = 3
18 ÷ 6 = 3 : 3 + 1 = 4
112 ÷ 8 = 14 : 14 + 1 = 15
135 ÷ 9 = 15 : 15 + 1 = 16