Practice MCQ Questions and Answer on Coding and Decoding
21.
In a certain code language, BORN is written as APQON and LACK is written as KBBLK. How will the word GRID be written in that code language?
(A) FSHCD
(B) HSJED
(C) FOHCD
(D) FSHED
Solution:
The first and third letters are each moved one step backward, while the second and fourth letters are each moved one step forward to obtain the corresponding letters of the code. Finally, in the code so obtained, the last letter of the word is inserted at the end.
22.
In a certain code language, OMNIPRESENT is written as QJONPTSMDRD. How is CREDIBILITY written in that code?
(A) DSFEJDDXSHKH
(B) JEFSDCXSHKH
(C) JEFSDDXSHKH
(D) JEFSDDZUJMJ
Solution:
Keeping the middle letter as it is, the first five and the last five letters of the word are written in the reverse order. In the group of letters so obtained, the first five letters are each moved one step forward, the middle letter is moved two steps forward and the last five letters are each moved one step backward to get the code. Thus, we have : CREDI/B/ILITY => IDERC/B/YTILI => JEFSD/D/XSHKH
23.
In a certain code JA KI MO PE means AT A FROG'S LEAP, MO LA KI SO means TAKE A LEAP AHEAD and RE BO JA NA means INSECTS ARE FROG'S DIET. Which of the following is code for AT in that language?
(A) a
(B) pe
(C) bo
(D) re
Solution:
Comparing, the first two sentence, we get, A LEAP = MO KI. Comparing, the first and third sentence, we get code for, FROG'S = JA. SO from the first sentence, we will get the code of AT = PE.
24.
If Dust is called Air, Air is called Fire, Fire is called Water, Water is called Colour, Colour is called Rain and Rain is called Dust, where do Fish live ?
(A) Dust
(B) Fire
(C) Colour
(D) Water
Solution:
Generally, Fishes lives in Water and Water is called Colour in the code. So Fishes live in Colour.
25.
In a certain system of coding, the word STATEMENT is written as TNEMETATS. In the same system of coding, what should be the code for the word POLITICAL?
(A) LACITILOP
(B) LCATILIOP
(C) OPILITACL
(D) None of these
Solution:
The letters of the given word are written in a reverse order to obtain the code. Reversing the order of letters in POLITICAL, we get LACITILOP.
26.
If in a certain language, EXECUTIVE is coded as TCIEUXVEE, the how is MAUSOLEUM coded in that language?
(A) LSEUOAUMM
(B) AUUCOSLMM
(C) AUEUOSEMM
(D) SLUEOAUMM
Solution:
Let us label the letters of the given word from 1 to 9. Then, the code contains the letters of the word in the order 6, 4, 7, 3, 5, 2, 8, 1, 9. Thus we have : MAUSOLEUM => LSEUOAUMM 123456789 => 647352819
27.
In a certain language, SIGHT is written as FVTUG. How is REVEAL written in the same language?
(A) YNRIRE
(B) DQHQMX
(C) FSJSOZ
(D) ERIRNY
Solution:
Each letter in the word is moved thirteen steps forward to obtain the corresponding letter of the code.
28.
In a certain code language, STREAMLING is written as CGTVUHOJMN. How will the word PERIODICAL be written in that language?
(A) PJSFQMBDJE
(B) PJSFQMNBJE
(C) QKTGRMBDJE
(D) QKTGRMCEKF
Solution:
The letters in the first half and second half of the word are written in the reverse order and in the group of letters so obtained, each letter in the first half is moved two steps forward while that in the second half is moved one step forward, to get the code. Thus, we have: PERIODICAL => PERIO/DICAL => OIREP/LACID => QKTGR/MBDJE.
29.
If TRUTH is coded as SUQSTVSUGI, then the code for FALSE will be
(A) EGZBKMRDE
(B) EGZKMRTDF
(C) EGZBKMRTDF
(D) FGZBKNRTDF
Solution:
Each letter in the word is replaced by a set of two letters - one preceding it and other following it - in the code. Thus, T is replaced by SU, R is replaced by QS and so on.
30.
If,
(a) QUO CUI HEER means BOY IS GOOD.
(b) LAI QUO MEA means SITA IS FAIR.
(c) RUO LEV MEA means ALL ARE FAIR.
(d) SI HAI CUI means DOG WAS GOOD.
then which of the following words stands for BOY ?
(A) Quo
(B) Lai
(C) Cui
(D) Heer
Solution:
By comparing the given codes, we get QUO means IS and CUI means GOOD, therefore, HEER means BOY.