Coding Decoding Aptitude MCQ Questions with Answers Set B

Question. If TEMPLE is coded as ELPMET, then how will CHURCH be coded as ?
a) HCURHC
b) HCRUHC
c) HCURCH
d) HCRUCH

Answer : B

Question. If CAB is coded as 6 and BED is coded as 40,then how will HAD be coded as ?
a) 16
b) 52
c) 32
d) 46

Answer : C

Question. If BACK is coded as 11312 and CAKE is coded as 51113, then how will MADE be coded as ?
a) 51413
b) 54113
c) 31145
d) 13145

Answer : B

Question. In a code language PENCIL is written as PNEICL , How will MOTHER be written in that language ?
a) MTOREH
b) MHTORE
c) OMHTRE
d) MTOEHR

Answer : D

Question. If MADE is coded as 12236 and BAD is coded as 123, then how will DECK be coded as ?
a) 36212
b) 34312
c) 36201
d) 44412

Answer : A

Question. In a code language, BANKER is written as NABREK. How will STRING be written as in that language ?
a) RSTGIN
b) RTSGNI
c) TSIRGN
d) RTGSNI

Answer : B

Question. If POSTER is coded as 592314 and DARK is coded as 8647, then how will STROKE be coded as ?
a) 234917
b) 234971
c) 493287
d) 329417

Answer : B

Question. If DIG=41 and GOAD=55, then FACT=____ ?
a) 45
b) 61
c) 53
d) 63

Answer : B

Question. In a code language, PERMUTATION is coded as IBKFRMXMFLG. How will PUBLICSECTOR be coded in the same language ?
a) ICUFEVLBVNLK
b) ICUFEVLBVMLJ
c) IRUEFVLBVMLK
d) IRVEFVLBVMLK

Answer : C

Question. In a code language, CONSULTANCY is written as QOJKYOUYJWP. How will MASTERMINDS be written in that language ?
a) APOWIIOZJEI
b) APOWHIOZJEI
c) APOWIHOZJEI
d) APOWJIOZJEI

Answer : A

Question. If MADE is coded as 12236 and BAD is coded as 123, then how will DECK be coded as ?
a) 36212
b) 34312
c) 36201
d) 44412

Answer : A

Question. If DON is coded as 345 and ROAM is coded as 6412 , then how will RANDOM be coded ?
a) 615342
b) 615324
c) 613542
d) 651342

Answer : A

Question. In a code language, 54831 is coded as 63922. What will be the code for 86274 in that language ?
a) 95365
b) 95185
c) 77185
d) 75365

Answer : A

Question. If HEAD is coded as 37 and BANK is coded as 57, then how will KITE be coded as ?
a) 87
b) 91
c) 69
d) 76

Answer : B

Question. If DON is coded as 345 and ROAM is coded as 6412 , then how will RANDOM be coded ?
a) 615342
b) 615324
c) 613542
d) 651342

Answer : A

Question. In a code language, ARDOUS is written as 1184152119. How will SYSTEM be written in that language ?
a) 19251920513
b) 19251920514
c) 19251921513
d) 18251820513

Answer : C

Question. If in a certain code, ‘HAMMER’ is written as ‘GBLNDS, then ‘NEEDLE’ will be coded as ?
a) DLENEE
b) OFLEKF
c) MFENKF
d) MFDEKF

Answer : D

Question. In a code language, if LAMINATE is coded as 121139141205, then how will SYSTEMIC be coded in the same language ?
a) 1925192051393
b) 1925192051493
c) 1825182051393
d) 1925192051383

Answer : A

Question. In a code language, EXPLAIN is written as XEALPNI. How will FACTORY be written in that language ?
a) AFTCROY
b) CAFOTYR
c) AFOTCYR
d) AFTOCYR

Answer : C

Question. In a code language, MONKEY is written as LPMLDZ. How will STROKE be written as in that language ?
a) TSSNLD
b) RUQFJP
c) RUQNLD
d) RUQPJF

Answer : D

Question. In a code language, CONCERT is written as CNEROCT. How will SMARTER be written in that language ?
a) RATESMR
b) RATEMSR
c) RATMESR
d) RETRAMS

Answer : B

Question. In a code language if FRIDGE is written as GTLHLK, then in the same language, how will you write the word KETTLE ?
a) WQLGXK
b) LGWXQK
c) GLXWQK
d) XKWQLG

Answer : B

Question. If ‘FINGER’ is coded as 15232112239 and ‘MARKET’ is coded as 14192916252, then how will ‘MILTON’ be coded as ?
a) 22213235295
b) 22122353295
c) 2222213355
d) 21223239525

Answer : A

Question. In a code language, BACHELOR is written as SNMDIBBA. How will COHESION be written as in that language ?
a) ONIFTJBP
b) ONJRFGPB
c) NPHTDIND
d) BPJTFINO

Answer : B

Question. In a code language, SELECTION is written as ESELDITNO. How will NOSTALGIA be written in the same language ?
a) ONSTBGLAI
b) ONTSBGLAI
c) NOTSBLGAI
d) ONTSZGLAI

Answer : B

Question. In a code language if FRIDGE is written as GTLHLK, then in the same language, how will you write the word KETTLE ?
a) WQLGXK
b) LGWXQK
c) GLXWQK
d) XKWQLG

Answer : B

Question. In a code language, BANKER is written as NABREK. How will STRING be written as in that language ?
a) RSTGIN
b) RTSGNI
c) TSIRGN
d) RTGSNI

Answer : D

Question. In a code language, BLEND is written as ENHPG. How will WINNER be written in the same language ?
a) ZKQPHT
b) ZKQPHU
c) YKQPHT
d) ZKOPHT

Answer : C

Question. In a code language, TEACHING is written as SDBDGHOH. How will BOOKWORM be written in that language ?
a) ANPLXNNS
b) ANPLXPSL
c) CPNJXPSL
d) ANPLVNSN

Answer : D

Question. In a certain code language, ‘mee muk pic’ means ‘roses are yellow’, ‘nil dic’ means ‘white flowers’ and ‘pic muk dic’ means ‘flowers are fruits’. What is the code for ‘white’ in that language ?
a) nil
b) pic
c) dic
d) muk

Answer : A

Question. If CAB is coded as 6 and BED is coded as 40,then how will HAD be coded as ?
a) 16
b) 52
c) 32
d) 46

Answer : C

Question. If MARBLES is coded as 181132192512 and INVITED is coded as 221969942520 , then how will COMPARE be coded as ?
a) 1322531253221
b) 1312531653241
c) 1322531652241
d) 1322531653241

Answer : D

Question. In a code language, CONVEYER is coded as FLQYBBBU. How will PERSONAL be written as in that language ?
a) SBUVLQXO
b) SBOULQXO
c) XRONZGV
d) RAUVMQYO

Answer : A

Question. In a code language, TEMPLE is written as DKOLDS. How will WORSHIP be written in that language ?
a) OHGRQNV
b) VNQGHOR
c) QJITSPX
d) OGHQRVN

Answer : A

Question. If A = 2, C= 4, then PARTICLE = _____ ?
a) 1721921104136
b) 172172094136
c) 172192094126
d) 1621820104136

Answer : A

Question. In a code language, QUESTION is written as OPJUTFVR. How will FACTOR be written in that language ?
a) SUPEGB
b) BGDSPU
c) SPUDBG
d) QPUDBE

Answer : C

Question. In a code language, CONVEYER is coded as FLQYBBBU. How will PERSONAL be written as in that language ?
a) SBUVLQXO
b) SBOULQXO
c) SBUVLQDO
d) RAUVMQYO

Answer : A

Coding is a method of sending a message to the receiver, such that the third person doesn’t know about it. Code language is formed by certain rules & patterns. To know this language following certain rules is called Decoding.

Typees of Coding-Decoding

(i) Changing Order
Category - I
In this category of questions, a word is coded by simply changing the order of letters of the word.

Example :

Question. Ex.1 In a code language if TRAINS is coded as RTIASN, how PISTOL will be coded in the same language ?
(a) SITLOP
(b) IPSTLO
(c) SIFTLO
(d) IPTSLO
Answer: D
Answer: If we compare the basic word (TRAINS) with the coded word (RTIASN), we would see that the letters used to the word are same as in the basic word but their order or placement has been changed. Letter T at first position of basic word has been placed at second position in the coded word and letter R at second position has been placed in the first position. It means that in this question, letters of the basic word have been interchanged i.e., first letter with second, third with the fourth and so on. And thus we get the coded word. In this code language word, PISTOL will be coded as IPTSLO. Hence, option (D) is our answer.

(ii) Letter-letter coding

Question. Ex.2 If in any code language, KUMAR is coded as LVNBS, How is EMOTIONAL coded in that language.
(a) FNQUJQBM
(b) FNPUJPOBM
(c) GNPUJPOBM
(d) GNQUJQOBM
Answer: B
Answer: Logic: Each letter is moved one step forward in the alphabetical order (\( +1 \)).
K \( +1 = \) L
U \( +1 = \) V
M \( +1 = \) N
A \( +1 = \) B
R \( +1 = \) S
Similarly for EMOTIONAL:
E \( +1 = \) F, M \( +1 = \) N, O \( +1 = \) P, T \( +1 = \) U, I \( +1 = \) J, O \( +1 = \) P, N \( +1 = \) O, A \( +1 = \) B, L \( +1 = \) M. Result: FNPUJPOBM.

Question. Ex.3 If in any code language NATIONAL is written as MZGRLMZO then how is JAIPUR written in that language
(a) QZRKFI
(b) PZRKFI
(c) QZRIFK
(d) QARKFI
Answer: A
Answer: Logic: The sum of the numerical positions of the original letter and the coded letter is \( 27 \) (Opposite letters).
N (\( 14 \)) + M (\( 13 \)) = \( 27 \)
A (\( 1 \)) + Z (\( 26 \)) = \( 27 \)
T (\( 20 \)) + G (\( 7 \)) = \( 27 \)
I (\( 9 \)) + R (\( 18 \)) = \( 27 \)
O (\( 15 \)) + L (\( 12 \)) = \( 27 \)
N (\( 14 \)) + M (\( 13 \)) = \( 27 \)
A (\( 1 \)) + Z (\( 26 \)) = \( 27 \)
L (\( 12 \)) + O (\( 15 \)) = \( 27 \)
Similarly for JAIPUR:
J (\( 10 \)) \( \rightarrow \) Q (\( 17 \)), A (\( 1 \)) \( \rightarrow \) Z (\( 26 \)), I (\( 9 \)) \( \rightarrow \) R (\( 18 \)), P (\( 16 \)) \( \rightarrow \) K (\( 11 \)), U (\( 21 \)) \( \rightarrow \) F (\( 6 \)), R (\( 18 \)) \( \rightarrow \) I (\( 9 \)). Result: QZRKFI.

Question. Ex.4 If the code for ALLOWANCE is ZMKPVBMDD, the word DEARNESS would be coded as :
(a) CFBAODTR
(b) EDZQMFRT
(c) CDZTMFTR
(d) CFZSMFRT
Answer: D
Answer: Logic: The letters follow a pattern of \( -1, +1, -1, +1... \)
A \( -1 = \) Z, L \( +1 = \) M, L \( -1 = \) K, O \( +1 = \) P, W \( -1 = \) V, A \( +1 = \) B, N \( -1 = \) M, C \( +1 = \) D, E \( -1 = \) D.
Similarly for DEARNESS:
D \( -1 = \) C, E \( +1 = \) F, A \( -1 = \) Z, R \( +1 = \) S, N \( -1 = \) M, E \( +1 = \) F, S \( -1 = \) R, S \( +1 = \) T. Result: CFZSMFRT.

(iii) Letter-number coding

Question. Ex.5 If RAT = 42 and CAT = 57, then LATE = ?
(a) 60
(b) 70
(c) 64
(d) 74
Answer: B
Answer: Logic: Letters are coded in reverse alphabetical order where Z = 1, Y = 2, X = 3, ..., A = 26.
RAT = \( 9 + 26 + 7 = 42 \)
CAT = \( 24 + 26 + 7 = 57 \)
Similarly, LATE = \( 15 + 26 + 7 + 22 = 70 \).

Question. Ex.6 If AJAY is written as 1117, then in same code NAMA would be written as
(a) 5114
(b) 5411
(c) 5141
(d) 4511
Answer: C
Answer: Logic: The sum of digits of the alphabetical position of each letter is taken.
A = \( 1 \)
J = \( 10 \rightarrow 1+0 = 1 \)
A = \( 1 \)
Y = \( 25 \rightarrow 2+5 = 7 \)
Code = 1117
Similarly for NAMA:
N = \( 14 \rightarrow 1+4 = 5 \)
A = \( 1 \)
M = \( 13 \rightarrow 1+3 = 4 \)
A = \( 1 \)
Result: 5141.

(iv) To code letter / words in puzzle form

Question. Ex.7 In a certain language, if 1 is coded as A, 2 as B, 3 as C, and so on, how is FLOWER coded in that code ?
(a) 6121523518
(b) 6121823515
(c) 6211523518
(d) 6218123515
Answer: A
Answer: Logic: Direct substitution of alphabetical positions (A=1, B=2, ..., Z=26).
F=6, L=12, O=15, W=23, E=5, R=18.
Thus FLOWER is codded as 6121523518.

Question. Ex.8 In a certain code, 15789 is written as AXBTC, 2346 is written as MPDU. How is 23549 written in that code ?
(a) MPXDT
(b) MPADC
(c) MPXCD
(d) MPXDC
Answer: D
Answer: By comparing the given codes:
1 \( \rightarrow \) A, 5 \( \rightarrow \) X, 7 \( \rightarrow \) B, 8 \( \rightarrow \) T, 9 \( \rightarrow \) C, 2 \( \rightarrow \) M, 3 \( \rightarrow \) P, 4 \( \rightarrow \) D, 6 \( \rightarrow \) U.
So, 23549 is coded as MPXDC.

Question. Ex.9 In a certain code, a number 13479 is written as AQFJL and 5268 is written as DMPN. How is 396824 written in that code ?
(a) QLPNKJ
(b) QLPNMF
(c) QLPMNF
(d) QLPNDF
Answer: B
Answer: By comparing the given codes:
1 \( \rightarrow \) A, 3 \( \rightarrow \) Q, 4 \( \rightarrow \) F, 7 \( \rightarrow \) J, 9 \( \rightarrow \) L, 5 \( \rightarrow \) D, 2 \( \rightarrow \) M, 6 \( \rightarrow \) P, 8 \( \rightarrow \) N.
For 396824:
3 \( \rightarrow \) Q, 9 \( \rightarrow \) L, 6 \( \rightarrow \) P, 8 \( \rightarrow \) N, 2 \( \rightarrow \) M, 4 \( \rightarrow \) F.
So, 396824 is coded as QLPNMF. Note: F is from the first code set (4=F).

(v) To code some objects in puzzle form

Question. Ex.10 If knr lin hen stands for everything is fine; nso ons lin stands for there is something and ksa nso wno stands for ask something now ; What would there stand for ?
(a) lin
(b) nso
(c) ons
(d) kse
Answer: C
Answer: 'lin' is common in first two sentences, it stands for 'is'. 'nso' is common in second and third sentences, it stands for 'something'. Clearly, in second statement 'there' stands for 'ons'.

Question. Ex.11 In a code language 157 means mother always lovable, 618 means always happy future and 952 means mother very happy then what does the word future stand for in the same language ?
(a) 9
(b) 6
(c) 1
(d) Can not be determined
Answer: B
Answer:
(i) 157 means mother always lovable
(ii) 618 means always happy future
(iii) 952 means mother very happy
From (i) & (ii) 'always' means 1.
From (ii) & (iii) 'happy' means 8? (Correction: In text sol says happy means 9 from i & iii, but comparing ii & iii common digit is 8? Wait, let's re-read the OCR. Text says from (i) & (iii) happy means 9? No, mother is common in i & iii, digit 5 is common. So mother=5. In ii & iii, happy is common, digit is not matching. Let's look at the example provided in OCR. sol says from (i) & (ii) 'always' means 1. In ii, 618 has 1 and 8. If 1 is always, then 6 or 8 is future. Key says Answer B (6).)

COMPETITIVE CORNER

Direction (Q.1 to 5) : Complete the given series.

Question 1. AZ, GT, MN, ........, YB
(a) KF
(b) RX
(c) SH
(d) TS
Answer: C

Question 2. AZ, CX, FU, .........
(a) IR
(b) IV
(c) JQ
(d) KP
Answer: C

Question 3. OTE, PUF, QVG, RWH, ..........
(a) SYJ
(b) TXI
(c) SXJ
(d) SXI
Answer: D

Question 4. BEH, KNQ, TWZ, ..........
(a) IJL
(b) CFI
(c) BDF
(d) ADG
Answer: B

Question 5. MHZ, NIW, OKT, PNQ, ..........
(a) RRN
(b) QRN
(c) QRM
(d) QQN
Answer: B

Direction (Q.6 to 8) : Study the following letter number sequence and answer the questions given below :

B 3 K G 5 P D 7 9 E R J I M T 6 Z H Q 3 W 2 A

Question 6. Which of the following is exactly in the middle between the ninth letter/number from the left end and seventh letter/number from the right end?
(a) I
(b) R
(c) M
(d) J
Answer: A

Question 7. If the first twelve letters/nubers in the above sequence are writen in the verse order, which of the following letter/number will be seventh to the left to ninth letter/number from our right?
(a) K
(b) P
(c) 5
(d) None of these
Answer: C

Question 8. What should come in place of the question mark (?) in the following letter/number series with reference to the below given sequence?
3GP, D9R, JM6, ?
(a) ZQW
(b) ZHW
(c) Z82
(d) ZQ2
Answer: A

Question 9. a a b _ a a a _ b b a _
(a) b a a
(b) a b b
(c) b a b
(d) a a b
Answer: A

Directions (Q.10 to 12) : A pyramid of letters is given below. Study the pyramid and select the correct alternatives to fill in the missing term.

P
Z J M
L Y X U I
Z B G O E V H
A W Q T X S D E M
B U O F R C J W S I T
N P C H L M Q G Z Y R F D

Question 10. LBQF, UXYL, GTRM, ?
(a) HEVO
(b) DSXT
(c) VEOG
(d) IUXY
Answer: C

Question 11. ZWOHL, BQFLM, GTRMQ, ?, ESJGZ
(a) OXCQG
(b) HESFR
(c) OCXCQ
(d) XCJQG
Answer: A

Question 12. PJXZM, LBQZG, ?
(a) DWZYS
(b) AUCBO
(c) UACBO
(d) DZWYS
Answer: B