Mathematical Reasoning MCQ - Coding Decoding
By careful observation, we can say that the
letters have been written in the reverse order. Hence,
SPEED will be written DEEPS; therefore, (a) is the
answer.
Here, it is −1 for each letter of the word ‘GREET’.

CDDO itself is a code. To find out what it stands for, we have to add +1 to the alphabets to get back the original word.


CDDO itself is a code. To find out what it stands for, we have to add +1 to the alphabets to get back the original word.

The pattern of coding is such that each
letter has been allotted the value of 2 letters following
the sequence, i.e., A = BC, B = CD, C = DE, etc. Hence,
the word GRACE will be coded as ‘HISTBCDEFG’.
Therefore, option (a) is the answer.
Refer to alphabet series in Table 5.1 starting
from the L.H.S. pair, E is the antecedent of F and G is
the precedent of F. We get EG as code for F; HJ as code
for I; and so on.
Similarly, EGDFDFKM is the code for FEEL. F is coded as EG with its precedent and antecedent letters. Similarly, ‘I’ is coded as HJ and L as KM. Hence, EGDFDFKM stands for FEEL. Therefore, option (b) is the correct answer.
Similarly, EGDFDFKM is the code for FEEL. F is coded as EG with its precedent and antecedent letters. Similarly, ‘I’ is coded as HJ and L as KM. Hence, EGDFDFKM stands for FEEL. Therefore, option (b) is the correct answer.

