How to Approach
a) Observe alphabets or numbers given in the code keenly.
c) Detect the rule in which the alphabets/numbers/words follow.
d) Fill the appropriate letter/number/word in the blank given.
In questions on codes, a word (basic word) is coded in a particular way and the candidates are asked to code other words in the same way. The coding and decoding tests are set up to judge the candidate’s ability to decipher the rule that has been followed to code a particular word/message and break the code to decipher the message.
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Coding Decoding Questions with Answers
1. If in a code language, ‘PARENT’ is written as ‘BDFGJK’ and ‘CHILDREN’ is written as ‘MOXQUFGJ’, how is ‘REPRINT’ written in that same code?
(1) FGBFXJK
(2) FGBUXJK
(3) FGBFXGD
(4) BGFXJK
2. If the word ‘EARTH’ is written as ‘QPMZS’ in a coded form, how can ‘HEART’ be written in the same coding language?
(1) SQPZM
(2) SQMPZ
(3) SPQZM
(4) SQPMZ
3. If the word ‘ANU’ be written as ‘MSN’ and ‘VINAY’ be written as ‘PLSMZ’ in a code language, how can we express the word ‘ANUVI’ in the same language?
(1) MSNPL
(2) MPNSL
(3) MSMPL
(4) MQMPL
(5) None of these
4. In a code language, ‘APPLE’ is written as ‘PQQRS’, ‘RIS’ is written as ‘ABC’ and ‘MANGO’ is written as ‘TPXYZ’. How will ‘ROSE’ be written in that same code language?
(1) ABCS
(2) ACBS
(3) AZSC
(4) AZQS
5. In a certain code ‘RAIN’ is writen as ‘TCKP’. How is ‘CLOUD’ written in that code?
(1) ENQWF
(2) EMQWF
(3) FNQWE
(4) ENRWF
6. In a code language, ‘PRINCE’ is written as ‘FLOWER’ and ‘PRINCESS’ is written as ‘FLOWERSS’. Which of the following word would be coded as ‘SLOWERS’?
(1) SRINCE
(2) SIRNCE
(3) SRNICE
(4) None of these
7. In a code language, ‘ORGANISATION’ is written as ‘CBDWLQJWYQCL’ and ‘OPERATION’ is written as ‘CXFBWYQCL’. How would ‘SEPARATION’ be coded?
(1) EJXEBYQCL
(2) JFQYWBCXQL
(3) JFXWBWYQCL
(4) QCLYWBFXJE
Directions (8 - 11) In a defence message, GETAWAY, FIRE, BACK-WARDS, MOVE, SLOW is coded as BENCDCI, QHOE, PCTL-DCOXU, ZMWE, VFMD. Based on this coding scheme, spot the codes of the following words
8. OVER
(1) MWED
(2) MWEO
(3) MWOE
(4) MWZO
9. DEADLY
(1) XECXEI
(2) XEEXCI
(3) XECXFI
(4) XENXFI
10. REWARD
(1) OEDCOU
(2) OEDCOX
(3) OEDNXE
(4) OTDCOX
11. GREAT
(1) BOECN
(2) BOENC
(3) BOEHC
(4) BOEQN
12. In a certain code, ‘ZOOM’ is written as ‘POON’ and ‘ROAD’ is written ‘QOBE’. How would ‘NOMP’ be coded in that code
language?
(1) PONX
(2) QOHB
(3) XONY
(4) MONZ
13. In a certain code, ‘FIRE’ is written as ‘QHOE’ and ‘MOVE’ as ‘ZMWE’. Following the same rule of coding, what should be the code for the word ‘OVER’?
(1) MWED
(2) MWEO
(3) MWOE
(4) MWZO
14. In a certain code, ‘STOVE’ is written as ‘FNBLK’, then how will ‘VOTES’ be written in the same code?
(1) FLKBN
(2) LBNKF
(3) LKNBF
(4) LNBKF
15. If ‘MACHINE’ is coded as 19-7-9-14-15-20-11, then how will you code ‘DANGER’ in the same code?
(1) 11-7-20-16-11-24
(2) 13-7-20-9-11-25
(3) 10-7-20-13-11-24
(4) 13-7-20-10-11-25
Directions (16 - 20) Study the following information to answer the given questions.
In a certain code ‘318’ means ‘run very fast’, ‘289’ means ‘to run away’, ‘97’ means ‘to see’ and ‘43’ means ‘very good’.
16. What is the code for ‘see’?
(1) 3
(2) 7
(3) 4
(4) 9
(5) None of these
17. Which of the following represents, ‘see good run away’?
(1) 8472
(2) 7914
(3) 7319
(4) 3289
(5) None of these
18. What is the code for ‘run’?
(1) 3
(2) 8
(3) 1
(4) 9
(5) None of these
19. Which of the following may represent ‘good to see away’?
(1) 7485
(2) 3149
(3) 5439
(4) 2479
(5) None of these
20. What does ‘4’ represent in this code?
(1) very
(2) fast
(3) run
(4) good
(5) None of these
21. If ‘LINGER’ is ‘123456’ and ‘FORCE’ is ‘56789’, then ‘FIERCE’ will be
(1) 345667
(2) 456678
(3) 345677
(4) 556789
(5) Cannot be determined
22. In a certain code ‘PRISM’ is written as ‘OSHTL’ and ‘RUBLE’ is written as ‘QVAMD’. How will ‘WHORL’ be written in that code?
(1) XIPSM
(2) VINSK
(3) UINSK
(4) XGPQM
23. If ‘ZEBRA’ is written as ‘2652181’, then how can ‘COBRA’ be written?
(1) 302181
(2) 3152181
(3) 31822151
(4) 1182153
24. In a certain code, FLOWERS is written as EKNVDQR. How is SUPREME written in that code?
(1) TQDROLD
(2) RTODQLD
(3) TQDDROL
(4) RTOQDLD
25. If ZIP = 198 and ZAP = 138, then how will you code P?
(1) 1
(2) 3
(3) 8
(4) 9
26. If ‘APE’ is written ‘369’, then how would ‘PEA’ be written in the code language?
(1) 369
(2) 693
(3) 936
(4) 963
27. If in a certain code language PARROT = 123345 and SOAT = 6425, then how would ROAST be written in that same code language?
(1) 32456
(2) 32564
(3) 34625
(4) 34265
28. If in a certain code language ‘DASHE’ is ‘21845’, then how would ‘SHADE’ be written in that same code language?
(1) 84125
(2) 84215
(3) 84152
(4) 84124
29. If ‘ACNE’ is coded as 1, 3, 14, 5, then ‘BOIL’ will be coded as
(1) 5, 31, 21, 25
(2) 2, 15, 9, 12
(3) 5, 29 19, 25
(4) 5, 29,19, 27
30. In a certain code language, ’DOME’ is written as ‘8943’ and ‘MEAL’ is written as ‘4321’. What group of letters can be formed
for the code ‘38249’?
(1) EOADM
(2) MEDOA
(3) EMDAO
(4) EDAMO
(5) None of these
Answer Key
Answer 1 : (1)
Answer 2 : (4)
Answer 3 : (1)
Answer 4 : (4)
Answer 5 : (1)
Answer 6 : (1)
Answer 7 : (3)
Answer 8 : (2)
Answer 9 : (3)
Answer 10 : (2)
Answer 11 : (1)
Answer 12 : (4)
Answer 13 : (2)
Answer 14 : (2)
Answer 15 : (3)
Answer 16 : (2)
Answer 17 : (1)
Answer 18 : (2)
Answer 19 : (4)
Answer 20 : (4)
Answer 21 : (5)
Answer 22 : (2)
Answer 23 : (2)
Answer 24 : (4)
Answer 25 : (3)
Answer 26 : (2)
Answer 27 : (4)
Answer 28 : (1)
Answer 29 : (2)
Answer 30 : (4)