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Xavier Aptitude Test 2021 Solved Paper
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© examsnet.com
Question : 21
Total: 100
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
2
k
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
:
5
4
7
Cannot be determined uniquely from the given information
6
Validate
Solution:
Flight become
znmorl
Let's assume
k
>
3
So flight will become
thgilf
→
znmrol
.
Hence the value of
k
will be
6
.
© examsnet.com
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