Coding and Decoding

Explanation / Important formulas:

Encoding/decoding is the translation of a message that is easily understood. When you decode a message, you are extracting the meaning of that message into terms that you are able to easily understand. Decoding has both verbal and non-verbal forms through communication.

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Coding and Decoding - Test



Coding and Decoding - Question and Answers

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Question 1
A particular letter stands for another letter in letter coding. If COURSE is coded as FRXUVH how is RACE would be coded?
A
HFDU
B
UDFG
C
UDFH
D
UDHF
Question 1 Explanation: 
In the given code, each letter is moved three steps forward than the corresponding letter in the word. So R is coded as U, A as D, C as F, E as H. Hence (3) is the answer.

Question 2
When numerical values are assigned to words.

Eg: If in a certain code ROPE is coded as 6821, CHAIR is coded as 73456 what will be the code for CRAPE?

A
73456
B
76421
C
77246
D
77123
E
None of these
Question 2 Explanation: 
Clearly, in the given code, the alphabets are coded as follows.

R O P E C H A I
6 8 2 1 7 3 4 5

So CRAPE is coded as 76421, So the answer is (2)

Question 3
In a certain code 3456 is coded as ROPE 15546 is coded as APPLE. Then how is 54613 coded?
A
RPPEO
B
ROPEA
C
POEAR
D
POEAR
E
None of these
Question 3 Explanation: 
Clearly in the given figures, the numbers are coded as follows.
3 4 5 6 1 4.
R O P E A L.
So 54613 is coded as POEAR. The answer is (3)
Question 4
If tee see pee means drink fruit juice, see kee lee means juice is sweet, and lee ree mee means he is  intelligent, which word in that language means sweet?
A
see
B
kee
C
lee
D
pee
E
tee
Question 4 Explanation: 
In the first and the second statements the common word is juice and the common code word is see. So see means juice. In the second and the third statements, the common word is ‘is’ and the common code is lee. So lee means is. Thus in the second statement, the remaining word sweet is coded as kee. Hence the answer is (2).
Question 5
If in a certain code language, 851 means good sweet fruit; 783 means good red rose and 341 means rose and fruit which of the following digits stands for sweet in that language?
A
8
B
5
C
1
D
3
Question 5 Explanation: 
In the first and the second statements, the common code digit is 8 and the common word is good. So 8 stands for good. In the first and the third statements, the common code digit is 1 and the common word is fruit. So 1 stands for fruit. Therefore in the first statement, 5 stands for sweet. Hence the answer is (2).
Question 6
If in a certain language FLOWER is written as EKNVDQ, what will be written as GNTRD?
A
HEOUS
B
HOUES
C
HUOSE
D
HOUSE
E
None of these
Question 6 Explanation: 
Each letter of the word is one step ahead of the corresponding letter of the code.

E K N V D Q G N T R D

F L O W E R H O U S E

Thus HOUSE is written as GNTRD, So the answer is (4)

Question 7
In a certain code ‘TOME’ is written as ' @ $ * ? ' and ARE is written as ‘ • £ ? ’ How can ‘REMOTE’ be written in that code?
A
£ ? • $ @ ?
B
@ ? * $ @ ?
C
£ ? * $ @ ?
D
Cannot be determined
E
None of these
Question 7 Explanation: 
From the data we have
T - @
O - $
M - *
E - ?
A - •
R - £
E - ?
Hence REMOTE is coded as £ ? * $ @ ? So (3) is the answer
Question 8
If in a certain language CHAMPION is coded as HCMAIPNO, how can NEGATIVE be coded in that code?
A
ENAGITEV
B
NEAGVEIT
C
MGAETVIEf
D
EGAITEVN
E
NEGATIEV
Question 8 Explanation: 
(1) In the code each of the two letters are reversed in arrangement.
Question 9
In a certain language KINDLE is coded as ELDNIK, how can EXOTIC be coded in that code?
A
EXOTLC
B
CXOTIE
C
COXITE
D
COXITE
E
EOXITC
Question 9 Explanation: 
In the code the arrangement of the letters in the word is wholly reversed.
Question 10
If in a certain language GAMBLE is coded as FBLCKF, how can FLOWER be coded in that language?
A
GKPVFQ
B
EMNXDS
C
GMPVDS
D
HNQYGT
E
EKNVDQ
Question 10 Explanation: 
The letters preceding the first, third and fifth letters of the given word and those succeeding the second, fourth and last letters of the word in the alphabet form the code.
Question 11
If in a certain language FASHION is coded as FOIHSAN, how can PROBLEM be coded in that code?
A
ROBLEMP
B
PLEBRUM
C
PRBOELM
D
RPBOELM
E
PELBORM
Question 11 Explanation: 
The 1st and the last letters of the word are kept as such in the code and all other letters in between them are wholly reversed.
Question 12
If FRIEND is coded as HUMJTK, how can CANDLE be written in that code?f
A
EDRIRL
B
DCQHQK
C
ESJFME
D
FYOBOC
E
DEQJQM
Question 12 Explanation: 
In the code, the first letter is the second alphabet, the second letter is the third alphabet, the third letter is the fourth alphabet and so on after the corresponding letter in the word.
Question 13
If in a certain code, TWENTY is written as 863985 and ELEVEN is written as 323039, how can TWELVE be written in that code?
A
863203
B
863584
C
863903
D
863903
E
None of these
Question 13 Explanation: 
The letters are coded accordingly T as 8, W as 6, E as 3, L as 2, and V as 0. So TWELVE is coded as 863203.
Question 14
If PALE is coded as 2134, EARTH is coded as 41590, how can is PEARL be coded in that language?
A
29530
B
24153
C
25413
D
25430
E
None of these
Question 14 Explanation: 
The letters are coded accordingly P as 2, E as 4, A as 1, R as 5 and L as 3. So PEARL is coded as 24153.
Question 15
If ROSE is coded as 6821, CHAIR is coded as 73456 and PREACH is coded as 961473, what will be the code for SEARCH?
A
246173
B
214673
C
214763
D
216473
E
None of these
Question 15 Explanation: 
The letters are coded accordingly S as 2, E as 1, A as 4, R as 6, C as 7 and H as 3. i.e., 214673
Question 16
In a certain code nee tim see means how are you ; ble nee see means where are you. What will be the code for where?
A
nee
B
tim
C
see
D
Cannot be determined
E
None of these
Question 16 Explanation: 
In the first and the second statements the common words are ‘are’ and ‘you’ and the common code words are nee and see. So nee and see means are and you. In the second statement the remaining code ble means where.
Question 17
In a certain code language pit nae tom means apple is green ; nae ho tap means green and white and ho tom ka means shirt is white. Which of the following represents apple in that language?
A
nae
B
tom
C
pit
D
ho
E
ka
Question 17 Explanation: 
In the first and the second statements, the common code word is nae and the common word is green. So nae means green. In the first and the third statements, the common code word is tom and the common word is is so tom means is. Therefore in the first statement pit means apple.
Question 18
If nitco sco tingo stands for softer than flower, tingo rho mst stands for sweet flower fragrance and mst sco tmp stands for sweet than smile what would fragrance stand for?
A
rho
B
mst
C
tmp
D
sco
E
None of these
Question 18 Explanation: 
In the first and the second statements the common code is tingo and the common word is flower. So tingo means flower. In the second and the third statements, the common code is mst and the common word is sweet. So mst means sweet. Therefore in the second statement, rho means fragranee.
Question 19
In a certain code language, 743 means Mangoes are good657 means Eat good food, and 934 means Mangoes are ripe. Which digit means ripe in that language?
A
5
B
4
C
9
D
7
E
Cannot be determined
Question 19 Explanation: 
In the first and the third statements, the common code digits are 4 and 3 ; and the common words are mangoes and are. So 4 and 3 are the codes for mangoes and are. Thus in the third statement 9 means ripe.
Question 20
In a certain code, 247 means spread red carpet,  256 means dust one carpet and 234 means one red carpet which digit in that code means dust?
A
2
B
3
C
5
D
6
E
Cannot say
Question 20 Explanation: 
In the first and the second statements, the common code digit is 2 and the common word is carpet. So 2 means carpet. In the second and the third statements, the common code digit is 6 and the common word is one. So 6 means one. Therefore in the second statement, 5 means dust.
Question 21
In the first and the second statements, the common code digit is 2 and the common word is carpet. So 2 means carpet. In the second and the third statements, the common code digit is 6 and the common word is one. So 6 means one. Therefore in the second statement, 5 means dust.
A
4
B
7
C
9
D
8
E
None of these
Question 21 Explanation: 
In the first and the second statements, the common code digit is 4 and the common word is good. So 4 stands for good. In the second and the third statements, the common code digit is 7 and the common word is pictures. So 7 stands for pictures. Thus in the second statement 8 stands for see.
Question 22
In a certain code 253 means books are old, 546 means man is old and 378 means buy good books. What stands for ‘are’ in that code?
A
2
B
4
C
5
D
6
E
9
Question 22 Explanation: 
In the first and the second statements, the common code digit is 5 and the common word is old, so 5 stands for old. In the first and third statements, the common code digit is 3 and the common word is books so 3 stands for books. Thus in the first statement, 2 stands for are.
Question 23
In a certain code language TSSNOFFQ is written as STRONGER then GQFDENN will be written as
A
DOMEERF
B
FREEDOM
C
FREEDOM
D
FREEDMO
E
None of these
Question 23 Explanation: 
The first letter is moved one step backward and second is moved one step forward the third letter is moved one step backward, the fourth letter one step forward and so on. So the answer is (3)
Question 24
If FULFNHW is the code for CRICKET, EULGH will be coded as
A
PRIDE
B
BRIDE
C
BLADE
D
BLIND
E
None of these
Question 24 Explanation: 
Each letter of the word is three steps ahead of the corresponding letter of the code.
Question 25
If in a certain language REMOTE is coded as ROTEME, which word would be coded as PNIICC?
A
NPIICC
B
PICCIN
C
PINCIC
D
PICNIC
E
PICINC
Question 25 Explanation: 
The groups of second and third letters and fourth and fifth letters in the word interchange places in the code.
Question 26
163542
A
XTJCNZ
B
TXJCNZ
C
XTJCZN
D
XTCJNZ
E
None of these
Question 26 Explanation: 
As given 1 is coded as X, 6 is coded as T, 3 is coded as J, 5 is coded as C, 4 is coded as N and 2 is coded as Z. So 163542 is coded as XTJCNZ.
Question 27
925873
A
ZQCFOJ
B
QZCFOJ
C
QZCOFJ
D
QZCFJO
E
None of these
Question 27 Explanation: 
As given 9 is coded as Q, 2 as Z, 5 as C, 8 as F, 7 as O and 3 as J. So 925873 is coded as QZCFOJ
Question 28
741568
A
ONCXTF
B
NOXCFT
C
ONCFCT
D
ONXCTF
E
None of these
Question 28 Explanation: 
7 is coded as O, 4 as N, 1 as X, 5 as C, 6 as T and 8 as F. So 741568 is coded as ONXCTF.
Question 29
Find the missing terms:  FRIEND : FPIBNZ : : MENTOR : _________.
A
MCNOQN
B
MCNQON
C
MNCNOQ
D
CMQNNO
Question 29 Explanation: 
F R I E N D< br/>
+0 -2 +0 -3 +0 -4< br/>
F P I B N Z< br/>
Similarly,< br/>
M E N T O R< br/>
+0 -2 +0 -3 +0 -4< br/>
M C N Q O N
Question 30
Which code should be replaced in the question mark?

MILD: NKOH: GATE:?

 

A
AIBVJ
B
BHCWI
C
CKDXK
D
DICWA
Question 30 Explanation: 
Here, letters are coded by skipping letters in alphabetical order, I.e.., M = N (no skipping) I = (j) K (letters in the bracket are one\\'s skipped)L = (mn) OD = (efg) H The skipping pattern is -1, -2 and -3 Therefore , G A T E will be coded as H C W I.
Question 31
If Sand is coded as Brick, Brick as House, House as Temple, Temple as Palace then where do you worship?
A
Palace
B
Temple
C
Brick
D
House
E
None of these
Question 32
How many such pairs of letters are there in the word GUARDIAN each of which has as many letters between them in the word as in the English alphabet ?
A
One
B
Two
C
Three
D
More than three
Question 33
In a certain code language K is written as 11 and KEEP is written as 37. How will the word DRAFT be written in that code language?
A
45
B
49
C
46
D
48
Question 33 Explanation: 
K = 11 Position Number in English alphabet
E= 5 and P = 16
11+5+5+16 = 37
There fore, DRAFT =4 + 18 + 1 + 6 + 20 = 49
Question 34
If in code of alphabet AT = 20, BAT = 40 then CAT = ?
A
34
B
56
C
40
D
60
Question 34 Explanation: 
By considering A=1 B=2 ............ T=20 ........ Z = 26
We can say that
A × T = 1 × 20 = 20
B × A × T = 2 × 1 × 20 = 40
C × A × T = 3 × 1 × 20 = 60
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