129

You examine the three dials that are set into the top of the security valve. Each is divided into three segments, and each segment displays a number. One of the segments on the third dial has numbers which can be altered by hand. Carefully you consider the numbers and soon realize that they are part of a coded combination lock. By turning the adjustable numbers on the third dial to the correct total, you will release the lock and open the valve.

Consider the following numbers carefully. When you think you know what the missing number is, turn to the entry which bears the same number as your answer.⁵

If you cannot solve the security code, turn to 226.