Directions :
The rth letter is shifted to (r+1)th letter for r=1,3,5…..21,23,25 letters.
The rth letter is shifted to (r-1)th letter for r=2,4,6…..22,24,26 letters
In decoding the inverse process is followed.
What is the code letter for ‘Q’?
S
R
P
O
T