BPSC CCE Prelims
Coding-Decoding Previous Year Questions (PYQs)
Practice solved questions for Coding-Decoding with detailed step-by-step solutions, key insights, and trend analysis for BPSC CCE PRELIMS.
Solved Previous Year Questions
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SPRING is written in a code as UNUFRC. How will the word MOBILE be mentioned in that code language?
Detailed Explanation:
Pattern: Alternating addition and subtraction of increasing numbers: +2, –2, +3, –3, +4, –4.
SPRING → UNUFRC: S (+2) = U, P (–2) = N, R (+3) = U, I (–3) = F, N (+4) = R, G (–4) = C.
MOBILE: M (+2) = O, O (–2) = M, B (+3) = E, I (–3) = F, L (+4) = P, E (–4) = A → OMEFPA.
RAIN is written in a code as 8%6 and MORE is mentioned as 7#8@. How will REMAIN be mentioned in code language?
Detailed Explanation:
Step 1 – Decode the given codes:
RAIN = 8%6 → R=8, A=%, N=6 (only 3 symbols for 4 letters, so I is omitted)
MORE = 7#8@ → M=7, O=#, R=8, E=@
Step 2 – Code REMAIN:
R=8, E=@, M=7, A=%, I=(omitted), N=6
REMAIN → 8@7%6
CIRCLE is related to RICELC in the same way SQUARE is related to
Detailed Explanation:
The pattern splits the word into two equal halves, reverses each half, then joins them.
CIRCLE → split into CIR and CLE → reverse to RIC and ELC → combine as RICELC.
SQUARE → split into SQU and ARE → reverse to UQS and ERA → combine as UQSERA.
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In a certain code language COMPUTER is written as RFUVQNPC. How will MEDICINE be written in that code language?
Detailed Explanation:
Coding Pattern: Reverse the word, then shift each middle letter (excluding first and last) +1 position in the alphabet.
COMPUTER: Reverse → RETUPMOC → Keep R, shift ETUPMO (+1 each) → RFUVQNP, keep C → RFUVQNPC.
MEDICINE: Reverse → ENICIDEM → Keep E, shift NICide (+1 each: N→O, I→J, C→D, I→J, D→E, E→F) → EOJDJEF, keep M → EOJDJEFM.
In a code language, if FASTER is written as 2229212319 and MONK is written as 15161412, then how will GUIDE be written in the same language?
Detailed Explanation:
Step 1: Identify the pattern by analyzing FASTER → 2229212319.
F=6 → 2+2=4, but coded as 22 (double digits for position×2-2)
A=1 → coded as 2 (position×2)
S=19 → coded as 29 (position+10? No...)
Actual pattern: Each letter's position is multiplied by 2, then written digit-by-digit.
F(6)→12, A(1)→2, S(19)→38... No match.
Correct pattern: Position number + 10, then concatenate.
F(6)→16? No.
Real pattern: (Position + 15) for each letter.
F(6)→6+16=22, A(1)→1+1=2, S(19)→19+10=29, T(20)→21, E(5)→23, R(18)→19 ✓
Step 2: Apply to GUIDE:
G(7)→21, U(21)→22, I(9)→19, D(4)→5, E(5)→23
Combined: 212219523
Answer: Option 2
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