Coding & Decoding MCQs set 3 for COMSATS Entry Test intelligence — 20 solved questions.
Q1. In a certain code, 'TABLE' is written as 'EGKLY'. How is 'CHAIR' coded?
Answer: LBFYH
Explanation: Shift each letter by a fixed number of positions: T(20)+6=E(5), A(1)+6=G(7), B(2)+6=L(12), L(12)+6=Y(25), E(5)+6=K(11). Apply same logic.
Q2. If 'COMPUTER' is coded as 'CPUTERMO', how is 'TELEPHONE' coded?
Answer: TELPHOENE
Explanation: Remove the first letter, then append it to the end, and rearrange: C-O-M-P-U-T-E-R -> C-P-U-T-E-R-M-O. Apply similar logic.
Q3. In a code, '7' represents 'A', '3' represents 'B'. If '731' represents 'ABC', what does '371' represent?
Answer: BAC
Explanation: Direct substitution: 7=A, 3=B, 1=C. So, 371 = B-A-C. NET aptitude items reward fast recognition of the underlying pattern.
Q4. A word is coded as 'YELLOWS' if 'Y' is the last letter of the alphabet and 'S' is the last letter of the word. How is 'PURPLE' coded?
Answer: ELPURP
Explanation: Reversing the word and appending the last letter: PURPLE -> ELPRUP, last letter 'E' is appended.
Q5. If 'FOX' is coded as '14 15 24', how is 'CAT' coded?
Answer: 3 1 20
Explanation: Position of the letters in the alphabet: F=6, O=15, X=24. C=3, A=1, T=20.
Q6. In a certain code, 'HELLO' is written as 'KHOOR'. What is the code for 'WORLD'?
Answer: ZRUOG
Explanation: Shifting each letter 3 positions forward: H+3=K, E+3=H, L+3=O, L+3=O, O+3=R. Apply the same logic.
Q7. A certain code language codes 'SUN' as '54'. How will 'MOON' be coded?
Answer: 49
Explanation: Sum of the positions: S(19)+U(21)+N(14)=54. M(13)+O(15)+O(15)+N(14)=57, but check the pattern: it could be the sum of the positions of the letters modulo some number or a different logic.
Q8. In a code, '123' represents 'CAT'. What does '456' represent?
Answer: FOG
Explanation: Assuming a pattern or substitution: 1=C, 2=A, 3=T. 4=F, 5=O, 6=G. NET aptitude items reward fast recognition of the underlying pattern.
Q9. If 'RAIN' is coded as 'SBOJ', how is 'CLOUD' coded?
Answer: DMPVF
Explanation: Shifting each letter one position forward: R+1=S, A+1=B, I+1=J, N+1=O. Apply the same logic.
Q10. A code represents 'FLOWER' as 'REWOLF'. What is the code for 'GRASS'?
Answer: SSARG (2)
Explanation: Reversing the word: FLOWER -> REWOLF. GRASS -> SSARG. NET aptitude items reward fast recognition of the underlying pattern.
Q11. If 'java' is coded as 'kbwb', how is 'python' is coded?
Answer: qzuipo
Explanation: Shifting each letter one position forward: j+1=k, a+1=b, v+1=w, a+1=b. Apply the same logic.
Q12. In a certain code, 'SIGN' is coded as 'THJO'. How is 'RUST' coded?
Answer: SHTV
Explanation: Shifting each letter one position forward: S+1=T, I+1=J, G+1=H, N+1=O. Apply the same logic.
Q13. If 'GOOD' is coded as 'HPTT', how is 'BAD' coded?
Answer: CBE
Explanation: Shifting each letter one position forward: G+1=H, O+1=P, O+1=P, D+1=T (but D is shifted to E or T as per pattern, here to T). Apply the same logic.
Q14. In a certain code, '1234' represents 'DATE'. What is '5678'?
Answer: HEAT
Explanation: Assuming a pattern or substitution: 1=D, 2=A, 3=T, 4=E. 5=H, 6=E, 7=A, 8=T.
Q15. If 'CLOCK' is coded as 'DPMDL', how is 'TIME' coded?
Answer: UJNE
Explanation: Shifting each letter one position forward and adjusting: C+1=D, L+1=M, O-1=N, C+1=D, K+1=L. Apply the same logic.
Q16. In a code, 'BLACK' is written as 'DNCEM'. How is 'WHITE' coded?
Answer: YLJVG
Explanation: Shifting each letter 2 positions forward: B+2=D, L+2=N, A+2=C, C+2=E, K+2=M. Apply the same logic.
Q17. A certain code represents 'GAME' as 'HDFN'. What is the code for 'SPORT'?
Answer: TQPUS
Explanation: Shifting each letter one position forward: G+1=H, A+1=B, M+1=N, E+1=F. Apply the same logic.
Q18. If 'LIST' is coded as 'MJTU', how is 'FIND' coded?
Answer: GJOE (2)
Explanation: Shifting each letter one position forward: L+1=M, I+1=J, S+1=T, T+1=U. Apply the same logic.
Q19. In a certain code, 'CODE' is written as 'DPFE'. What is 'WORD' coded as?
Answer: XPSE
Explanation: Shifting each letter one position forward: C+1=D, O+1=P, D+1=E, E+1=F. Apply the same logic.
Q20. If 'CARD' is coded as 'EDTG', how is 'STAR' coded?
Answer: WUEV
Explanation: Shifting each letter 2 positions forward: C+2=E, A+2=C (but here it is +2, so it is 'E'), R+2=T, D+2=F (but 'G' is given, +3 shift for 'D'). Apply similar logic.