state gov AP Police SI (Pre+Mains) Mock Test 2022 Logical Reasoning Coding Decoding Coding and Decoding By Letter Shifting
In a certain code, the nth letter (n ≠ 15) of the English alphabet is coded as rth letter of it, where r is the remainder when 5n + 8 is divided by 26. (For instance, the 7th letter G is coded as L since 5.7 + 8 = 43 leaves remainder 17 when divided by 26 and Q is the seventeenth letter). The inverse process is used to decoding. Based on this, answer the question.
The code for 'BLIMK' is
1
RPPUK
2
PPAUK
3
RPAUU
4
RPAUK