If PIPE is written as 169165, then what is the last digit of the code for SWAN?

1. Each letter is coded by its position number: P=16, I=9, P=16, E=5, giving 16-9-16-5. 2. For SWAN, the last letter N is the 14th letter of the alphabet. 3. The code for N is 14, whose last digit is 4. _Source: RRB Group D CEN-02/2018 PYQ, Q.95._