Test Index

TS ICET 19 Aug 2021 Shift 2 Paper

In a certain code the alphabets

A, B, C, \ldots

are given ranks

1,2,3, \dots

respectively, and then

n^{\text{th}}

letter is coded as

k^{\text{th}}

letter where

1 \le k \le 26

and

5n \equiv k \pmod{26}

. For example, the

12^{\text{th}}

letter

L

is coded as the

8^{\text{th}}

letter

H

because

60 \equiv 8(

mod 26

)

. For decoding reverse process is followed. Based on this answer questions from 56 to 60

Question : 58 of 200

Marks: +1, -0

The letters that are not changed under the given code are

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