Coding-Decoding Questions and Answers

Q: Acording to a military code, SYSTEM is SYSMET and NEARER is AENRER. What is the code for FRACTION ?

Correct answer: CARFNOITThe word is split into two halves and each half is reversed separately. SYSTEM gives SYS and TEM; SYS reversed is still SYS, being a palindrome, and TEM reversed is MET, so the code is SYSMET. NEARER gives NEA and RER; NEA reversed is AEN and RER is again a palindrome, giving AENRER. FRACTION splits into FRAC and TION, which reverse to CARF and NOIT.

Q: If air is called green , green is called blue, blue is called sky, sky is called yellow, yellow is called water and water is called pink, then what is the color of clear sky ?

Correct answer: SkyThe question is what the colour of a clear sky is called in this language. A clear sky is blue, and blue is called sky, so the answer is sky. It is worth reading the chain in the right direction: sky is called yellow, which answers a different question altogether.

Q: If MADRAS can be written as NBESBT, how can BOMBAY be written in that code ?

Correct answer: CPNCBZEach letter advances one place: MADRAS becomes NBESBT. BOMBAY therefore gives B→C, O→P, M→N, B→C, A→B, Y→Z, the Y wrapping round to Z. Since B appears twice in BOMBAY, C must appear twice in the code, which is true of every option here - the final letter is what separates them.

Q: In a certain code language MONKEY is written as LNMJDX. How will TIGER be written in that code ?

Correct answer: SHFDQEach letter of the original is replaced by the letter immediately before it in the alphabet: M becomes L, O becomes N, and so on throughout.Applying the same shift to TIGER gives S, H, F, D, Q.

Important Instructions

131.

Acording to a military code, SYSTEM is SYSMET and NEARER is AENRER. What is the code for FRACTION ?

A.CARFTINO
B.CARFTION
C.ARFCNOIT
D.CARFNOIT

Answer: D

Correct answer: CARFNOIT

The word is split into two halves and each half is reversed separately. SYSTEM gives SYS and TEM; SYS reversed is still SYS, being a palindrome, and TEM reversed is MET, so the code is SYSMET. NEARER gives NEA and RER; NEA reversed is AEN and RER is again a palindrome, giving AENRER. FRACTION splits into FRAC and TION, which reverse to CARF and NOIT.

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132.

If in a certain language if ENTRY is coded as 12345 and STEADY is coded as 931785, then state which is the correct code for below word. ARREST

A.744589
B.744193
C.166479
D.745194

Answer: B

The alphabets are soded as shown :

E	N	T	R	Y	S	A	D
1	2	3	4	5	9	7	8

A is coded as 7,
R as 4,
E as 1,
S as 9 and
T as 3.
So, ARREST is coded as 744193.

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133.

If in a certain language if ENTRY is coded as 12345 and STEADY is coded as 931785, then state which is correct code for below word. ENDEAR

A. 524519
B.174189
C.128174
D. 124179

Answer: C

The alphabets are soded as shown :

E	N	T	R	Y	S	A	D
1	2	3	4	5	9	7	8

E is coded as 1,
N as 2,
D as 8,
A as 7 and
R as 4.
So, ENDEAR is coded as 128174.

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134.

If ENGLAND is written as 1234526 and FRANCE is written as 785291, how is GREECE coded ?

A. 381171
B.381191
C.832252
D.835545

Answer: A

The alphabets are soded as shown :

E	N	G	L	A	D	F	R	C
1	2	3	4	5	6	7	8	9

So, G is coded as 3,
R as 8,
E as 1 and
C as 9.
Thus, GREECE is coded as 381191.

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135.

In as a certain code, 15789 is written as EGKPT and 2346 is written ALUR. How is 23549 written in that code ?

A. ALEUT
B. ALGTU
C.ALGUT
D.ALGRT

Answer: C

In the given codes, the numbers are coded as shown :

1	5	7	8	9	2	3	4	6
E	G	K	P	T	A	L	U	R

i.e., 2 as A,
3 as L,
5 as G,
4 as U and
9 as T.
So, 23549 is coded as ALGUT.

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136.

In a certain code, a number 13479 is written as AQFJL and 5268 is written as DMPN. How is 396824 wriitten in that code ?

A. QLPNKJ
B.QLPNMF
C.QLPMNF
D.QLPNDF

Answer: B

In the given codes, the numbers are coded as shown :

1	3	4	7	9	5	2	6	8
A	Q	F	J	L	D	M	P	N

i.e., 3 as Q,
9 as L,
6 as P,
8 as N,
2 as M and
4 as F.
So, 396824 is coded as QLPNMF.

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137.

If Z= 2197 and R= 729. How would J be written in that code?

A.216
B.124
C.512
D.125

Answer: D

$Z \; code \Rightarrow 26 \Rightarrow \frac{26}{2}\Rightarrow (13)^{3}\Rightarrow 2197$

$R\; code \Rightarrow 18 \Rightarrow \frac{18}{2}\Rightarrow (9)^{3}\Rightarrow 729$

$Similarly\; \; J\; \; code\; \; \Rightarrow 10\Rightarrow \frac{10}{2}\Rightarrow (5)^{3}\Rightarrow 125$

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138.

If air is called green , green is called blue, blue is called sky, sky is called yellow, yellow is called water and water is called pink, then what is the color of clear sky ?

A.Blue
B.Sky
C.Yellow
D.Water

Answer: B

Correct answer: Sky

The question is what the colour of a clear sky is called in this language. A clear sky is blue, and blue is called sky, so the answer is sky. It is worth reading the chain in the right direction: sky is called yellow, which answers a different question altogether.

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139.

If MADRAS can be written as NBESBT, how can BOMBAY be written in that code ?

A. CPNCBX
B. CPNCBZ
C.CPOCBZ
D.CQOCBZ

Answer: B

Correct answer: CPNCBZ

Each letter advances one place: MADRAS becomes NBESBT. BOMBAY therefore gives B→C, O→P, M→N, B→C, A→B, Y→Z, the Y wrapping round to Z. Since B appears twice in BOMBAY, C must appear twice in the code, which is true of every option here - the final letter is what separates them.

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140.

In a certain code language MONKEY is written as LNMJDX. How will TIGER be written in that code ?

A.SHFDQ
B.SHFDR
C.UJHFS
D.SGFDQ

Answer: C

Correct answer: SHFDQ

Each letter of the original is replaced by the letter immediately before it in the alphabet: M becomes L, O becomes N, and so on throughout.

Applying the same shift to TIGER gives S, H, F, D, Q.

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