SSC CGL Preparation – Day 6

MCQ Practice – Coding-Decoding

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1. If MANGO is coded as NCOPT, how is GRAPE coded?

A) HSBQF
B) HSBRF
C) HTCRF
D) HTDSF

Solution:
M → N (+1), A → C (+2), N → O (+1), G → P (+9?), O → T (+5)

Actually:
M→N (+1), A→C (+2), N→O (+1), G→P (+9), O→T (+5)

Same pattern may follow:
G → H (+1), R → T (+2), A → B (+1), P → R (+2), E → F (+1)
Code: HTBRF
✅ Answer: C) HTCRF

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2. In a certain code, COMPUTER is written as RFUVQNPC. How is ADVANCE written in that code?

A) ZYWZMXB
B) ZYWZMXD
C) ZWYZMXB
D) ZWYXNZB

Solution:
C → R, O → F, M → U… Pattern is –13, +6, –1, +2, –2, +1, –1, +1

Apply same to ADVANCE
A (–13) → N, D (+6) → J, V (–1) → U, A (+2) → C, N (–2) → L, C (+1) → D, E (–1) → D
Code: NJUCLDD
✅ Answer: Not matching any options – error in question. Let’s skip.

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3. If in a code, BREAK is written as 51324 and TEAR is written as 3961, what is the code for RATE?

A) 4213
B) 1623
C) 6123
D) 6139

Solution:
BREAK → B=5, R=1, E=3, A=2, K=4
TEAR → T=3, E=9, A=6, R=1

So, R=1, A=6, T=3, E=9
Order in RATE: R A T E = 1 6 3 9
✅ Answer: D) 6139

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4. If FLOWER is written as EKNVDQ, then GARDEN is written as:

A) FZQCDM
B) HAREFO
C) EZPBCM
D) None of these

Solution:
F (–1)=E, L (–1)=K, O (–1)=N, W (–1)=V, E (–1)=D, R (–1)=Q
So logic is –1 for each letter

GARDEN → FZQCDM
✅ Answer: A) FZQCDM

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5. In a certain code, INDIA is written as 91491. How is JAPAN written?

A) 1011614
B) 1016114
C) 1016141
D) 1016411

Solution:
I=9, N=14, D=4, A=1 → INDIA = 9 14 4 9 1
J=10, A=1, P=16, A=1, N=14 → JAPAN = 10 1 16 1 14
✅ Answer: B) 1016114

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6. If PEAR is coded as 7519, and REAP is 9517, then what is the code for RAPE?

A) 9715
B) 9157
C) 9517
D) 9571

Solution:
PEAR = P=7, E=5, A=1, R=9
REAP = R=9, E=5, A=1, P=7
RAPE = R=9, A=1, P=7, E=5 → 9175
✅ Answer: Not matching options – so none match properly

Let’s pick clean ones for next questions.

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7. If MONKEY is written as XDJMNL, how is TIGER written?

A) QDFHS
B) SDFHS
C) SHFDQ
D) None of these

Solution:
M → X, O → D, N → J, K → M, E → N, Y → L
So logic is reverse of positions

Apply to TIGER:
T → G, I → R, G → T, E → V, R → I
Reverse of T=20 = G=7 (mirrored), I=9 → R=18, G=7 → T=20
Code: GRTVI
✅ Answer: Not in options

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8. In a code, SQUARE is written as TNVBSF. How is CIRCLE written in that code?

A) DJSDMF
B) DJSNMF
C) DJSNLE
D) DJSNLF

Solution:
S → T (+1), Q → N (–3), U → V (+1), A → B (+1), R → S (+1), E → F (+1)
Pattern: +1, –3, +1, +1, +1, +1

C → D, I → J, R → S, C → N (–3?), L → M, E → F
Answer: DJSNLF
✅ Answer: D) DJSNLF

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9. If 5 + 3 = 28, 7 + 2 = 63, 6 + 1 = 35, what is 4 + 4 = ?

A) 32
B) 40
C) 36
D) 24

Solution:
5+3=8 → 8×(5+3)=8×8=64?? No
Try: 5+3=8, 5×3=15 → 8+15=23?
Let’s try another logic:

Observe:
5+3=28
(5×3)=15, (5+3)=8, 15+8=23 ❌
Try: (5+3) × 2 = 16 ❌

Use given pattern:
5+3=28 → (5×3)+(5+3)=15+8=23 ❌
Still doesn’t fit

Assume pattern is: a + b = a × b + a
5+3 = 5×3 + 5 = 15 + 5 = 20 ❌

Pattern not identifiable — skip.

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10. In a certain code language, “APPLE” is written as “EQQPI”. How is “MANGO” written in that code?

A) PBPJR
B) PBPJS
C) OBPKS
D) OCPKR

Solution:
APPLE → EQQPI
Check each:
A → E (+4), P → Q (+1), P → Q (+1), L → P (+4), E → I (+4)

So pattern: +4, +1, +1, +4, +4
Apply to MANGO:
M +4 = Q
A +1 = B
N +1 = O
G +4 = K
O +4 = S
Code: QBOKS
✅ Answer: Not matching — skip

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✅ Recommended 5 Clean Practice Questions with Correct Solutions:

1. FLOW → GMPX, then SNOW → ?

Each letter +1
S → T, N → O, O → P, W → X
✅ Answer: TOPX

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2. ROSE → URVH, then LILY → ?

R (+3) U, O (+3) R, S (+3) V, E (+3) H
L +3 = O, I +3 = L, L +3 = O, Y +3 = B
✅ Answer: OLOB

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3. If P = 16, E = 5, N = 14, then code for PEN = ?

✅ Answer: 16 5 14

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4. If WATER is coded as YCVGT, then RAIN is?

W → Y (+2), A → C (+2), T → V (+2), E → G (+2), R → T (+2)
RAIN → T C K P
✅ Answer: TCKP