Coding-Decoding Questions and Answers

Q: In a certain code, COMPUTER is written as RFUVQNPC. How is MEDICINE written in the same code ?

Correct answer: EOJDJEFMReverse COMPUTER to RETUPMOC, then advance every letter by one except the first and last, which stay as they are: R, E→F, T→U, U→V, P→Q, M→N, O→P, C. That gives RFUVQNPC. MEDICINE reversed is ENICIDEM; keeping the E and the M and advancing the six between them gives E, N→O, I→J, C→D, I→J, D→E, E→F, M, so the code is EOJDJEFM.

Q: If green means red, red means yellow, yellow means blue, blue means orange and orange means green, what is the colour of clean sky ?

Correct answer: YellowThe question asks what the sky would be called in this language, not what it is called in ours. A clear sky is blue, and the list says yellow means blue - so blue is what these speakers call yellow. Reading the substitution the wrong way round gives orange, which is what blue means rather than what means blue.

Q: If COOL is coded as DQRP, then write the code for HOT

Correct answer: IQWThe shift grows by one at each position. COOL to DQRP is C+1, O+2, O+3, L+4 - note the two O’s give different letters, which is what shows the shift is not constant. HOT therefore gives H+1=I, O+2=Q, T+3=W.

Q: If ROSE is coded as 6821, CHAIR is coded as 73456 and PREACH is coded as 961473, what will be the code for SEARCH ?

The alphabets are coded as shown : So, in SEARCH, S ia coded as 2, E as 1, A as 4, R as 6, C as 7, H as 3. Thus, the code for SEARCH is 214673

Important Instructions

141.

In a certain code, COMPUTER is written as RFUVQNPC. How is MEDICINE written in the same code ?

A.EOJDJEFM
B.EOJDEJFM
C. MFEJDJOE
D. MFEDJJOE

Answer: A

Correct answer: EOJDJEFM

Reverse COMPUTER to RETUPMOC, then advance every letter by one except the first and last, which stay as they are: R, E→F, T→U, U→V, P→Q, M→N, O→P, C. That gives RFUVQNPC. MEDICINE reversed is ENICIDEM; keeping the E and the M and advancing the six between them gives E, N→O, I→J, C→D, I→J, D→E, E→F, M, so the code is EOJDJEFM.

Discuss in Forum

142.

In a certain code language,

'134' means 'good and tasty';

'478' means 'see good pictures' and

'729' means 'pictures are faint'.

Which of the following digits stands for 'see'?

Answer: D

In the first and second statements, the common code digit is '4' and the common word is 'good'.

So, '4' stands for 'good'.
In the second and third statements, the common code digit is '7' and the common word is 'pictures'.
So, '7' means 'pictures'.
Thus, in the second statements, '8' means 'see'.

Discuss in Forum

143.

If PALE is coded as 2134, EARTH is coded as 41590, how is PEARL coded in that code ?

A.29530
B.24153
C.25413
D.25430

Answer: B

The alphabets are soded as shown :

P	A	L	E	R	T	H
2	1	3	4	5	9	0

So, P is coded as 2,
E as 4,
A as 1,
R as 5 and
L as 3.
Thus, the code for PEARL is 24153.

Discuss in Forum

144.

If in a certain language, COUNSEL is coded as BITIRAK, how is GUIDANCE written in that code ?

A.EOHYZJBB
B.FOIYZJBB
C.FOHYZJBB
D.None of above

Answer: C

he letters at odd positions are each moved one step backward, while the letters at even positions are respectively moved six, five, four, three, two,... steps backward to obtain the corresponding letters of the code.

Discuss in Forum

145.

In a certain code, MENTION is written as LNEITNO. How is PATTERN written in that code ?

A.ATAETNR
B.OTAETNR
C.OTAESNR
D.STAETNR

Answer: B

Explanation:
In the given word, we can analyse that,
M is decreased by 1, M-1 = L, and other words are interchanged,

EN - NE
TI - IT
ON - NO

So,
PATTERN will be

P -1 O
AT - TA
TE - ET
RN - NR

Discuss in Forum

146.

If green means red, red means yellow, yellow means blue, blue means orange and orange means green, what is the colour of clean sky ?

A.Blue
B. Green
C.Yellow
D.Orange

Answer: C

Correct answer: Yellow

The question asks what the sky would be called in this language, not what it is called in ours. A clear sky is blue, and the list says yellow means blue - so blue is what these speakers call yellow. Reading the substitution the wrong way round gives orange, which is what blue means rather than what means blue.

Discuss in Forum

147.

In a certain language, MADRAS is coded as NBESBT, how is BOMBAY coded in that code ?

A.CPNCBZ
B.CPNCBX
C.DPNCBZ
D.DPNCBX

Answer: A

Explanation:
Clearly every letter is increased by 1 as
M +1 N
A +1 B
D +1 E
R +1 S
A +1 B
S +1 T

So,
after increasing every character in work BOMBAY by 1, we get

Discuss in Forum

148.

If COOL is coded as DQRP, then write the code for HOT

A.JQW
B.IQW
C.IQX
D.IPW

Answer: B

Correct answer: IQW

The shift grows by one at each position. COOL to DQRP is C+1, O+2, O+3, L+4 - note the two O’s give different letters, which is what shows the shift is not constant. HOT therefore gives H+1=I, O+2=Q, T+3=W.

Discuss in Forum

149.

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

Answer: B

The alphabets are coded as shown :

${\color{Blue} \begin{matrix} R & O & S & E & C& H & A & I & P\\ 6& 8& 2& 1& 7 & 3 & 4 & 5 & 9 \end{matrix}}$

So, in SEARCH,

S ia coded as 2,
E as 1,
A as 4,
R as 6,
C as 7,
H as 3.
Thus, the code for SEARCH is 214673

Discuss in Forum

150.

If GIVE is coded as 5137 and BAT is coded as 924, how is GATE coded ?

A. 5427
B.5724
C.5247
D.2547

Answer: C

The alphabets are soded as shown :

G	I	V	E	B	A	T
5	1	3	7	9	2	4

So, G is coded as 5,
A as 2,
T as 4 and
E as 7.
Thus, the code fro GATE is 5247.

Discuss in Forum

Loading…

Topics

Other Subjects

Tags: Coding-Decoding Questions and Answers || Coding-Decoding MCQ Questions and Answers || Coding-Decoding GK Questions and Answers || Coding-Decoding GK MCQ Questions || Coding-Decoding Multiple Choice Questions and Answers || Coding-Decoding GK || GK on Coding-Decoding || Reasoning Questions and Answers || Reasoning MCQ Questions and Answers || Reasoning GK Questions and Answers || GK on Reasoning

Coding-Decoding Questions and Answers

Important Instructions

Topics

Other Subjects

About Us

Stay informed about all important Dates & Notifications