Question
Quantitative Ability and Data Interpretation Question on Cryptography
An encryption system operates as follows:
Step 1. Fix a number k(k≤26).
Step 2. For each word, swap the first k letters from the front with the last k letters from the end in reverse order. If a word contains less than 2k letters, write the entire word in reverse order.
Step 3. Replace each letter by a letter k spaces ahead in the alphabet. If you cross Z in the process to move k steps ahead, start again from A.
Example: k = 2: zebra -- > arbez --> ctdgb.
If the word “flight” becomes “znmorl” after encryption, then the value of k:
A
5
B
4
C
7
D
Cannot be determined uniquely from the given information
E
6
Answer
6
Explanation
Solution
The correct answer is option (E):6