Classical

Coding Decoding - Coding Decoding MCQ

1:  

 If TOUR is written as 1234, CLEAR is written as 56784 and SPARE is written as 90847, find the code for CARE

A. 1247
B. 4847
C. 5247
D. 5847
 
 

Option: D

Explanation :
R is in every group of letter and 4 is in every group of numbers so R = 4 C L E A R = 5 6 7 8 4 , S P A R E = 9 0 8 4 7 Here 847 are common So CL = 56 and SP = 90 Thus C A R E = 8 4 7


2:  

CALANDER is coded in a code as CLANAEDR. Find the code for CIRCULAR under the same rule.

A. LACANDER
B. CRIUCALR
C. CLANADER
D. None of these
 
 

Option: B

Explanation :
C AL AN DE R = C IR CU LA R
C LA NA ED R = C RI UC AL R
Here first and last letters are not
dispositioned but other pairs are being reversed


3:  

 In a code sign DRLAL is coded as 62014314. How  CAMEL is coded ?

A. 5315714
B. 35729310
C. 5313613
D. None of these
 
 

Option: A

Explanation :
Add two in the serial number of letters as :
D = 4th + 2 = 6
R= 18th + 2 = 20
L = 12th + 2 = 14
A = Ist + 2 = 3
L = 12th + 2 = 14


4:  

 In a code language 35796 is written as 44887. Find the code for 46823.

A.

55914

B.

57194

C.

55934

D.

55745

 
 

Option: A

Explanation :

3+1=4 of the code
5-1=4 of the code
7+1=8 of the code
9-1=8 of the code
6+1=7 of the code
as 3    5     7     9      6
   +1   -1   +1   -1    +1
-----------------------------
     4    4     8     8       7

So  4      6     8       2      3
     +1     -1   +1     -1    +1
----------------------------------
       5      5     9        1       4


5:  

 If LIGHT is coded as GILTH, find the code for RAINY.

A. IARYN
B. ARINY
C. NAIRY
D. RINAY
 
 

Option: A

Explanation :
There are two groups LIG and HT each being reversed
LIG HT RAI, NY
GIL TH IAR, YN




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