Coding Decoding Reasoning Questions with Answers


Coding and Decoding Questions with Answers MCQ of reasoning are very useful in Management (CAT, MAT), IBPS (PO and Clerk), SSC, SBI, LIC and other competitive exams.
1. In a certain code, GIGANTIC is written as GIGTANCI. How is MIRACLES written in that code?
(a) MIRLCAES (b) MIRLACSE (c) RIMCALSE (d) RIMLCAES

2. In a certain code, RPODUCTS is written as NPMBSARQ. How is COMPREHENSION written in that code?
(a) AMKNPCFCLOMLQ (b) AMKNPCFCLQGML (c) AMKNPCFCLQGNL (d) AMKNPCFCKOML

3. If CARPET is coded as TCEAPR, then the code for NATIONAL would be–
(a) NLATNOIA (b) LANOITAN (c) LNAANTOI (d) LNOINTAA

4. In a code language if POSE is coded as OQNPRTDF, then the word TYPE will be coded as–
(a) SUXZOQFD (b) SUXZQOFD (c) SUXZOQDF (d) SUXZQODE

5. In a certain code language’ COMPUTRONE’ is written as ‘PMOCTUENOR’. How is ‘ADVANTAGES’ written in that code language?
(a) AVDATASEGN (b) NAVDASEGAT (c) AVDATNSEGA (d) SEGATNAVAD

6. If in a code language MADRAS is coded as TBSEBN, then NEW DELHI will be coded as–
(a) JNKFEXFO (b) JIMFFUFO (c) JIMFEXFO (d) JIMFEXEP

7. If SYSTEM is written as SYSMET, and NEARER as AENRER, then FRACTION will be coded as:
(a) ARFITOON (b) CARFNOIT (c) ARFITCNO (d) NOITCARF

8. If ZUBIN is coded as ATCHO, then MEHTA will be coded as–
(a) NDIUB (b) NDISB (c) NDGSB (d) NDHSI

9. If EQOKYO stands for DOLLAR, and QQXMBP stands for POUNDS, then the code for MARK will be–
(a) NCUO (b) NCUJ (c) NCQI (d) NCPH

10. If in certain code language, UNTENSIL is coded as WVGPUKN, then which word would be coded as DMSFXG?
(a) BKQEVE (b) BKQDWE (c) BKQDWF (d) BKQDVE

11. In a certain code BROUGHT is written as SGFVAQN. How is SUPREME written in that code?
(a) FNFSRTO (b) RTOSDLD (c) DLDSRTO (d) DLDSTVQ

12. Using the above coding procedure, ‘creatures killed watchman’ would be coded as–
(a) maw gaw daw (b) maw vaw naw (c) gawk aw daw (d) gaw new kaw

13. If you use the above coding procedure, how would you code ‘cik’?
(a) is (b) Mohan (c) there (d) reaching

14. According to the above code, ‘Men need encouragement’ would be–
(a) 167 (b) 258 (c) 268 (d) 157

15. In a certain language, ‘Tom Kun Sud’ means ‘Dogs are barking,’ ‘Kun Jo Mop’ means ‘Dogs and hourse’, and ‘Mut Tom Ko’ means ‘Donkeys are mad’. Which word in that language means ‘barking’?
(a) Sud (b) Kun (c) Jo (d) Tom

Answers–
1. (b) First three letters of the word are kept as they are sixth letter comes at fourth place shifting fourth and fifth letters to fifth and sixth places, respectively and the last two letters are exchanged.
2. (b) Each latter of the word has been written two letters back in the coded word, as their positions in the alphabet.
3. (c) Letters of the basic word are written in the coded word in such a way that last and first letters, second last and second letters, third last and third letter and so on are written together in the coded word.
4. (c) The word has been coded in such a way that codes for letter P are OQ (One letter behind and one letter ahead of P in alphabet). Similarly, codes for O are NP and so on.
5. (c) First four letters are reversed, two middle are reversed and then last four letters are reversed. Therefore, the word ADVANTAGES would be coded as AVDATNSEGA. Hence, option (c) is the correct answer.
6. (c) Last letter of the coded word is the next letter of the first letter of the basic word, second last letter is the next letter of the second one and so on in the alphabetical order.
7. (b) Letters of first half of the word are reversed, and than the letters of the second half of the word are reversed.
8. (b) Letters at the odd places are coded one letter ahead, and letters at the even places are coded one letter behind in the alphabetical order.
9. (c) Letters of first half of the word are coded with a gap of 0,1,2 letters in the forward direction, and letters of the second half are coded with a gap of 0,1,2 letters in the backward direction in alphabetical order.
10. (d) Each letter of the first word has been coded two letters ahead in the alphabetical order.
11. (c)
12. (a) Using the above procedure, we see that ‘maw gaw daw’ means creatures killed watchman.
13. (c) Code for ‘cik’ is ‘there’.
14. (d) In the first and fourth sentences, common word is ‘are’ and common number is 2, hence ‘are’ stands for ‘2’. Form the first and third sentences, ‘very’ stands for ‘3’. Form first and second sentences, ‘busy’ stands for ‘4’. So from the first statement ‘Men’ stands for ‘1’. Similarly, ‘need’ stands for ‘7’. From this we conclude that ‘Men need encouragement’ will be coded as ‘157’.
15. (a) In the first and second sentence, common word is ‘Dogs’ and common code is ‘Kun’. In the first and third sentences, common word is ‘are’ and common code is ‘Tom’. Therefore, form first sentence we get that ‘Sud’ stands for barking’.

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