General awareness and Aptitude test
9
CODING DECODING
What is Coding Decoding :
A ‘Code’ is a system of conveying a message
through signals. It is a method of sending a
message between sender and the receiver in
such a way that only the sender and the receiver
can know its meaning. However ‘Coding’ is done
according a certain pattern in the mind of the
sender. Therefore, its meaning can be deciphered
by a third person. Only if he carefully studies this
pattern. This process is called ‘Decoding’. This
capability is important in many fields of application.
The ‘Coding- Decoding’ test is set up to
judge the candidate’s ability to decipher the
pattern which goes behind a coded message or
statement. There are many types of coding:
A. LETTER CODING
In such questions, code values are assigned
to a word in terms of the alphabets. There are
following types of letter coding.
Type 1 :
In this category, one word is coded
according to a particular pattern and the candidate
is asked to give the code letters for another word
following the same pattern of coding.
Ex.
The word MAN is coded as NBO.
Which of the following should be the code
for SKY?
Sol.
The first letter of the code
N
comes after
M
. the first letter of the word in question. Similarly,
the second letter
B
comes next to
A
of the
question, and the third letter of code
O
comes
after
N
of the main word. Following this pattern
we can say that
TLZ
is coded as
SKY
.
LETTER AND NUMERICAL CODING
In these questions either numerical values
are assigned to a word or alphabetical code values
are assigned to the numbers. The candidate is
required to analyze the code according to the
directions.
Ex.
In a given code SISTER is coded as
535301. UNCLE as 84670 and BOY as 129. How
is RUSTIC written in the code ?
(a) 633185
(b)
185336
(c)
363815
(d)
581363
(e) None
Sol.
In this code the alphabets are coded as
follows
S I S T E R U N C L E B O Y
5 3 5 3 0 1 8 4 6 7 0 1 2 9
If we apply this method , the code comes out
to be 185336
Multiple Choice Questions
1) In a certain coding system MOTHER is
coded as PQWJHT, how will you code
SISTER?
a) VKUVHT
b) VKVVHU
c) VKVVHT
d) VKVVHS
2) In a certain coding system PRICE is coded
as SVNIL, how will you code COST?
a) F SXY
b) FSWY
c) FTWZ
d) FSXZ
3) In a certain coding system FLOWER is
written as SEXOMF, how will you code
GARDEN?
a) OEERBH
b) OFESBH
c) OEESBG
d) OEERBG
4) In a certain coding system TRAIN is written
as GIZRM, how will you code FIGURE?
a) USTGKV
b) VTYXTC
c) URTFIV
d) VKGTSV