Problem #PRU-88200

Problems Discrete Mathematics Set theory and logic Mathematical logic Puzzles

Problem

The director of a power plant, considering the list of phone numbers and the names of his employees, noticed a certain relationship between names and phone numbers. Here are some names and phone numbers from the list:

Achinskiy 9125

Butenko 7215

Dapin 5414

Galick 6711

Martyanof 9136

Romidze 7185

What is the phone number of an employee named Ognef?