In a certain code language REGION is written as

Solution

Positional value of opposite letter of R – I = 9 Positional value of opposite letter of E – V = 22 Positional value of opposite letter of G – T = 20 Positional value of opposite letter of I – R = 18 Positional value of opposite letter of O – L = 12 Positional value of opposite letter of N – M = 13 Similarly, Positional value of opposite letter of S – H = 8 Positional value of opposite letter of U – F = 6 Positional value of opposite letter of G – T = 20 Positional value of opposite letter of A – Z = 26 Positional value of opposite letter of R – I = 9