coding decoding Model Questions & Answers, Practice Test for ibps rrb po prelims

Question :16

If the for TOWN is ‘UQZR’, then what will be the code for ‘WKOPFML’ ?

Answer: (d)

Each letter of the word ‘TOWN’ is moved 1, 2, 3, & 4 steps forward, i.e., ‘T’ is moved 1 step, ‘O’ 2 steps, W 3 steps & N 4 steps, to obtain the code. So in “village”, V is coded as W, I as K, L as O, again L as P, A as F, G as M and E as L. Thus the code for VILLAGE becomes WKOPFML.

Question :17

In a certain code BOOK is TLLC and TRICK is NAGDC, then BRICK is coded as -

Answer: (b)

Direct Substitution.

Question :18

If VISHAL is coded as 22102111517, then what will be the code for SACHIN ?

Answer: (c)

Type – Alphanumeric coding.

Word VISHAL
Value in alphabet series229198112
+1+2+3+4+5
Code22102111517
Similary, for the wordSACHIN
19138914
+1+2+3+4+5
Final Code1925111319

Thus code is 1925111319, option (c).

Question :19

In a certain code, if BLACK is KCALB then THEFT is ?

Answer: (a)

Simple arrangement (Swap Coding)

Question :20

If HELMET is written as IFMNFU. Then how will CHOCOLATE be written as ?

Answer: (b)

Type – Pattern substitution (+1)

Word - HELMET
↓ +1↓ +1↓ +1↓ +1↓ +1↓ +1
Code -MHKJRI
CHOCOLATE
↓ +1↓ +1↓ +1↓ +1↓ +1↓ +1↓ +1↓ +1↓ +1
DIPDPMBUF

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