Coding and Decoding Questions and Answers – Set 8

This set of Logical Reasoning Questions and Answers (MCQs) focuses on “Coding and Decoding – Set 8”.

1. In a certain code “PETROL” is written as “QGWVTR”. How is “DIESEL” written in that code?
a) SRLFEP
b) JDKALE
c) EKHWJR
d) UDQKAN

Explanation: Here, every letter of the word moves +n from its position where n is position of alphabet in the word.
i.e. for PETROL, P+1→Q, E+2→G, T+3→W, R+4→V, O+5→T, L+6→R.
Similarly, for DIESEL, D+1→E, I+2→K, E+3→H, S+4→W, E+5→J, L+6→R.

2. In a certain code “INTEREST” is written as “GLRCPCQR”. How is “PASSION” written in that code?
a) BWKXUAA
b) NYQQGML
c) SHXXHLH
d) GWPPNCV

Explanation: Here, each letter moves -2 from its original position.
i.e. for “INTEREST” the code is GLRCPCQR.
Similarly, for “PASSION” the code is NYQQGML.

3. In a certain code “INTEL” is written as “KPVGN”. How “ALTER” is written in that code?
a) CNVGT
b) SPUSR
c) NJEVP
d) ESPTO

Explanation: Here, each letter moves +2 from its original position.
i.e. for “INTEL” →I→K, N→P, T→V, E→G, L→N.
Similarly, for “ALTER” the code is CNVGT.

4. In a certain code “564” means “all the best”, “736” means “best of luck” and “423” means “all is luck”. Which of the following is the code for “luck”?
a) 6
b) 4
c) 3
d) 7

Explanation: Here, in the first and second statement, the common code number is ‘6’ and common word is ‘best’. In the second and third statement the common code number is ‘3’ and common word is ‘luck’. In first and third statement, the common code number is ‘4’ and common word is ‘all’.
Therefore, 3→luck, 4→all, 6→best.
This gives, 2→is, 5→the, 7→of.

5. In a certain code “HELIUM” is written as “hElIUM”. How is “ARGON” written in that code?
a) ArGOn
b) aRGoN
c) argON
d) ARgOn

Explanation: Here, according to the positions of the alphabets, odd position alphabets are written in capital letters whereas, even position alphabets are written in small letters.

6. If the letters of the word “ALPHABET” are arranged alphabetically, then which letter would be 2nd in the right from the third letter of word?
a) A
b) E
c) H
d) T

Explanation: Here, when arranged alphabetically the word is AABEHLPT.

7. In a certain code “CONDUCTOR” is written as “CNOUDTCRO”. How can “INSULATOR” be written in that code?
a) ISNLUTARO
b) INLSUTAOR
c) INSLUAROT
d) ISLNRATOU

Explanation: Here, after first letter of the word the remaining letters are swapped with its adjacent letter.
Therefore for INSULATOR the code is ISNLUTARO.

8. In a certain code “HALE” is written as “13”. Then how can “MALL” be written in that code?
a) 14
b) 11
c) 17
d) 19

Explanation: Here, the positional values of alphabets are added and then divided by 2.
i.e. H→5 + A→1 + L→12 + E→5 = 26÷2 = 13.
Similarly, for MALL→ 13+1+12+12 = 38÷2 = 19

9. In a certain code “CL34R” is written as “FO67U”. How is “ER45E” written in that code?
a) F1D8R
b) X8KVS
c) HU78H
d) E4R4N

Explanation: Here, each alphabet and number moves +3 times from its original position.
i.e. C→F, L→O, 3→6, 4→7, R→U.
Similarly, for ER45E the code is HU78H.

10. If ‘white’ is called ‘yellow’, ‘yellow’ is called ‘blue’, ‘blue’ is called ‘red’, ‘red’ is called ‘black’, ‘black’ is called ‘violet’ and ‘violet’ is called ‘green’, then what would be the colour of evening sky?
a) Red
b) Green
c) Black
d) Yellow

Explanation: Here, the colour of evening sky is red and it is given that ‘red’ is called ‘black’.