This set of Logical Reasoning Questions and Answers (MCQs) focuses on “Coding and Decoding – Set 9”.
1. In a certain code “ACIDIC” is written as “BELHNI”. How is “BASIC” written in that code?
a) SRLEP
b) DKALE
c) CCVMH
d) UDQAN
View Answer
Explanation: Here, every letter of the word moves +n from its position where n is position of alphabet in the word.
i.e. for ACIDIC, A+1→B, C+2→E, I+3→L, D+4→H, I+5→N, C+6→I.
Similarly, for BASIC, B+1→C, A+2→C, S+3→V, I+4→M, C+5→H.
Hence, the answer is CCVMH.
2. In a certain code “ELECTRONICS” is written as “CJCARPMLGAQ”. How is “ELECTRICAL” written in that code?
a) BCJWCKXUAA
b) CJCAROGAYJ
c) SHXXHLHCJC
d) CJCGWPPNCV
View Answer
Explanation: Here, each letter moves -2 from its original position.
i.e. for “ELECTRONICS” the code is CJCARPMLGAQ.
Similarly, for “ELECTRICAL” the code is CJCAROGAYJ.
Hence, the answer is CJCAROGAYJ.
3. In a certain code “COMPUTER” is written as “EQORWVGT”. How “PROTOTYPE” is written in that code?
a) RTQVQVARG
b) SPUSRRAGV
c) NJEVPVGAR
d) ESPTOQGAV
View Answer
Explanation: Here, each letter moves +2 from its original position.
i.e. for “COMPUTER” →C→E, O→Q, M→O, P→R, U→W, T→V, E→G, R→T.
Similarly, for “PROTOTYPE” the code is RTQVQVARG.
Hence, the answer is RTQVQVARG.
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 “all”?
a) 6
b) 4
c) 3
d) 7
View Answer
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.
Hence the answer is 4.
5. In a certain code “HYDROGEN” is written as “hYdrOGEn”. How is “LITHIUM” written in that code?
a) lIthIUM
b) LiThIuM
c) liTHiUm
d) LItHIUm
View Answer
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.
Hence, the answer is lIthIUM.
6. If the letters of the word “MACHINE” are arranged alphabetically, then which letter would be 2nd in the right from the second letter of word?
a) A
b) E
c) H
d) C
View Answer
Explanation: Here, when arranged alphabetically the word is ACEHIMN.
Hence, the answer is H.
7. In a certain code “AERONAUTICS” is written as “ARENOUAITSC”. How can “ASTRONOMY” be written in that code?
a) ATSORONYM
b) ATSNOORMY
c) ANSTOMROY
d) ANRSOTOYM
View Answer
Explanation: Here, after first letter of the word the remaining letters are swapped with its adjacent letter.
Therefore for ASTRONOMY the code is ATSORONYM.
Hence, the answer is ATSORONYM.
8. In a certain code “LETTER” is written as “40”. Then how can “MESSAGES” be written in that code?
a) 44
b) 31
c) 57
d) 29
View Answer
Explanation: Here, the positional values of alphabets are added and then divided by 2.
i.e. LETTER→12 + 5 + 20 + 20 + 5 + 18 = 80÷2 = 40.
Similarly, for MESSAGES→ 13 + 5 + 19 + 19 + 1 + 7 + 5 + 19 = 88÷2 = 44.
Hence, the answer is 44.
9. In a certain code “M0N5O0N” is written as “S6T11U6T”. How is “W1NT3R” written in that code?
a) F1D8RV
b) X8KV8S
c) C7TZ9X
d) E4RP4N
View Answer
Explanation: Here, each alphabet and number moves +6 from its original position.
i.e. M→S, 0→6, N→T, 5→11, O→U, 0→6, N→T.
Similarly, for W1NT3R the code is C7TZ9X.
Hence, the answer is C7TZ9X.
10. If ‘white’ is called ‘yellow’, ‘yellow’ is called ‘blue’, ‘blue’ is called ‘red’, ‘red’ is called ‘black’, ‘black’ is called ‘violet’, ‘violet’ is called ‘green’ and ‘green’ is called ‘orange’, then what would be the colour if we mix red and green together?
a) Red
b) Green
c) Blue
d) Yellow
View Answer
Explanation: Here, the colour when we mix red and green will be yellow and it is given that ‘yellow’ is called ‘blue’.
Hence, the answer is Blue.
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