1,8,18,32, () solve the numbers in brackets What's the next number
Add the number of digits to every two numbers
For example, if 1 + 8 = 9, then 1 + 8 + 9 = 18
Similarly, if 8 + 18 = 26 and the single digit is 6, then 8 + 18 + 6 = 32
Therefore, 18 + 32 = 50, the number of single digits is 0, and the number of brackets = 18 + 32 + 0 = 50