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Coding-Decoding (Sanket Bhasha)

Shabd ko "code" mein badalna — jaasoosi wala Maths! Ch 2 ki alphabet positions yahan seedha kaam aayengi. 🔐

Dosto, Coding-Decoding matlab kisi shabd ko ek chhupe hue niyam se dusre roop mein likhna. Jaise "MAN" ko "NBO" likh diya — har letter ek aage khisak gaya!

Sawal do tarah ke hote hain: Coding (naye shabd ka code banao) aur Decoding (code se asli shabd nikalo). Dono mein kaam ek hi hai — niyam pakadna.

CET Group D mein isse 1–2 questions pakke aate hain. Aur khushi ki baat — iska poora base Chapter 2 hai. Alphabet positions aur EJOTY pakke hain to ye chapter 15 minute ka hai. Chalo! 💪

1. Type 1 — Letter Shifting (sabse common) ⭐

Har letter ko aage ya peeche khiskaya jata hai. Niyam pakadne ke liye pehle letter ki tulna karo:

MAN → NBO  (har letter +1) MAN 13114 +1+1+1 NBO 14215 Isi niyam se BOY → CPZ (Y ke baad Z, Z ke baad wapas A)
Letters ko unki position (number) likh do — shift turant dikh jata hai. Yahi is chapter ka 60% hissa hai.
✏️ Solved Example 1 — FRIEND = GSJFOE, to MOTHER = ? Step 1: F→G (+1), R→S (+1) — niyam mil gaya: +1
Step 2: M→N, O→P, T→U, H→I, E→F, R→S
Step 3: Answer = NPUIFS ✓
✏️ Solved Example 2 (peeche wala) — DOG = ALD, to CAT = ? Step 1: D(4) → A(1) = −3; O(15) → L(12) = −3 ✓
Step 2: C(3)−3 = Z(26 — ghoom ke wapas), A(1)−3 = X(24), T(20)−3 = Q(17)
Step 3: Answer = ZXQ ✓  (A se peeche jao to Z par pahunch jaate hain — alphabet gol chakkar hai!)

2. Type 2 — Reverse (Opposite) Letter Coding

⭐ A↔Z, B↔Y, C↔X … formula: opposite = 27 − position Solved Example: RAM ka code?
Step 1: R = 18 → 27−18 = 9 = I
Step 2: A = 1 → 27−1 = 26 = Z · M = 13 → 27−13 = 14 = N
Step 3: RAM = IZN ✓
📌 Yaad rakhne wale opposite jode A↔Z · B↔Y · C↔X · D↔W · E↔V · F↔U · G↔T · H↔S · I↔R · J↔Q · K↔P · L↔O · M↔N
Trick: M aur N beech mein saath hain — wahi se dono taraf ginna aasan hai.

3. Type 3 — Number Coding (letters → numbers)

StyleExample
Har letter ki positionCAB = 3, 1, 2 (ya bina space: 312)
Position jodi huiCAT = 3120 (C=3, A=1, T=20)
Sab positions ka JODSUN = 19+21+14 = 54
Position × koi numberA=2, B=4, C=6… (position × 2)
✏️ Solved Example — SUN = 54, to MOON = ? Step 1: S+U+N = 19+21+14 = 54 ✓ (niyam = positions ka jod)
Step 2: M+O+O+N = 13+15+15+14 = 57 ✓

4. Type 4 — Substitution Coding (shabd ki jagah shabd)

✏️ Solved Example "Agar 'red' ko 'blue' kehte hain, 'blue' ko 'white' kehte hain — to saaf aasman ka rang kya kehlayega?"
Step 1: Asli duniya mein aasman ka rang = blue
Step 2: Par yahan 'blue' ko 'white' kehte hain
Step 3: Answer = white ✓
Tarika: pehle asli jawab socho, phir dekho us shabd ko "kya kehte hain".

5. Type 5 — Word/Letter Jumble (ulta likhna)

✏️ Solved Example — DELHI = IHLED, to MUMBAI = ? Step 1: DELHI ko ulta padho: I-H-L-E-D ✓ (poora shabd reverse)
Step 2: MUMBAI ulta = IABMUM ✓
Dhyan: yahan letters badle nahi, sirf kram (order) badla hai.

6. Kaunsa Type Hai — 4 second mein pehchano

Code mein dikheType
Code ke letters aage-peeche waleShifting (+1, −3…)
Code mein wahi letters, ulte kram meinJumble/Reverse word
Code ke letters bahut door wale (A→Z type)Opposite (27 − n)
Code mein numbers hainNumber coding (position ya jod)
Poore shabd badle hue (red → blue)Substitution
✏️ Type 1 — "Agar X = Y hai, to Z = ?" Sabse common. Pehle ek-do letters par shift nikalo, phir naye shabd par lagao. Verify karne ke liye teesra letter bhi check kar lo.
✏️ Type 2 — Decoding (code se asli shabd) Yahan niyam ULTA lagega! Agar coding +1 thi, to decoding mein −1 karo. Ye sabse badi galti ki jagah hai — sawal dhyan se padho ki code diya hai ya asli shabd.
✏️ Type 3 — Number coding Pehle check karo: numbers alag-alag hain (har letter ka apna) ya ek hi number (sabka jod)? SUN = 54 → jod wala. CAT = 3120 → alag-alag.
✏️ Type 4 — Substitution ("kise kya kehte hain") Do-step: asli jawab socho → us shabd ka naya naam dhundo. "Paani ko doodh kehte hain, to peete kya ho?" → asli jawab paani → yahan use doodh kehte hain.
✏️ Type 5 — Mixed/condition wale Kabhi ek hi shabd mein alag-alag shift hota hai (jaise 1st letter +1, 2nd +2, 3rd +3). Har letter ka shift alag likho — pattern mil jayega.
Trick 1: Pehle letter par hi niyam pakdo
M → N matlab +1
Poora shabd mat dekho. Pehle letter se shift nikalo, doosre se confirm karo, aur chal pado. 5 second bachte hain.
Trick 2: Alphabet gol chakkar hai
Z ke aage A · A ke peeche Z
Y + 2 = A, C − 3 = Z. Ye 26 ka circle yaad rakho — yahin sabse zyada galti hoti hai.
Trick 3: Decoding mein niyam ULTA
Coding +3 → Decoding −3
"Code XYZ ka asli shabd kya hai?" — yahan aage nahi, peeche chalna hai. Sawal mein tarah pehchano.
Trick 4: Opposite letters ke jode
27 − position · M↔N beech mein
A↔Z, B↔Y, C↔X… Bas M aur N yaad rakho (13 aur 14) — waha se dono taraf ginna aasan hai.
Trick 5: Options se ulta chalo
Har option ko decode karke dekho
Niyam na mile to options mein se ek uthao aur ulta chal ke dekho ki wo diye gaye shabd banata hai ya nahi. 4 options mein answer pakka mil jayega.
❌ Galti 1: Z/A par ghoomna bhool jana Y + 2 = A hai (Z ke baad wapas A). Aur C − 3 = Z. Log yahan atak ke galat option chun lete hain — alphabet ko gol maano.
❌ Galti 2: Decoding mein bhi aage badhna Agar coding +1 thi to decoding mein −1 karna hai. Sawal padho: "code kya hoga" (aage) ya "asli shabd kya tha" (peeche)?
❌ Galti 3: Ek letter dekh ke niyam maan lena Kabhi har letter ka shift alag hota hai (+1, +2, +3). Kam se kam do-teen letters par niyam check karo, tabhi aage badho.
❌ Galti 4: Number coding mein position aur jod mila dena SUN = 54 (jod) aur CAT = 3120 (alag-alag positions) — dono bilkul alag style hain. Pehle dekho code mein ek number hai ya kai.
❌ Galti 5: Substitution mein asli duniya bhool jana "Aasman ka rang?" ka asli jawab blue hai — usi ke naye naam par jao. Log seedha option se jawab dhundne lagte hain aur fas jate hain.
Coding ka pehla step?tap 👆
Pehle letter se shift nikalo, doosre se confirm
Y + 2 = ?tap 👆
A (alphabet gol chakkar hai)
C − 3 = ?tap 👆
Z
Opposite letter ka formula?tap 👆
27 − position (A↔Z, B↔Y)
M ka opposite letter?tap 👆
N (27−13 = 14)
MAN = NBO, to BOY = ?tap 👆
CPZ (+1)
DOG = ALD, to CAT = ?tap 👆
ZXQ (−3)
RAM ka opposite-coding code?tap 👆
IZN
FRIEND = GSJFOE, to MOTHER = ?tap 👆
NPUIFS (+1)
MOUSE = PRXVH, to CAT = ?tap 👆
FDW (+3)
A=1 style: CAT = ?tap 👆
3120 (3, 1, 20)
SUN = 54 ka niyam?tap 👆
Positions ka JOD (19+21+14)
DELHI = IHLED ka niyam?tap 👆
Poora shabd ulta (reverse)
Decoding mein niyam kaisa lagta hai?tap 👆
ULTA (coding +3 → decoding −3)
Substitution ka tarika?tap 👆
Pehle asli jawab, phir uska naya naam
Code mein numbers dikhein to?tap 👆
Dekho: alag-alag positions ya ek jod
Niyam bilkul na mile to?tap 👆
Options ko ulta decode karke test karo
Is chapter ka base kaunsa chapter?tap 👆
Ch 2 — alphabet positions & EJOTY
TypePehchan / Rule
ShiftingLetters aage/peeche — pehle letter se shift nikalo
Opposite27 − position (A↔Z, M↔N)
Number (position)CAT = 3120
Number (jod)SUN = 54
Reverse wordDELHI = IHLED
SubstitutionAsli jawab → uska naya naam
Alphabet ka circleZ ke baad A; A se peeche Z
DecodingNiyam ulta lagao
Niyam confirmKam se kam 2–3 letters par
MAN → NBO+1 → BOY = CPZ
DOG → ALD−3 → CAT = ZXQ
Aakhri hathiyarOptions ko ulta decode karo
🎯 Score: 0 / 0 Total questions: 14
Practice (exam-style)

Q1. If MAN is coded as NBO, then BOY is coded as:

💡 Har letter +1 → B→C, O→P, Y→Z.
Practice (exam-style)

Q2. If DOG is coded as ALD, then CAT is coded as:

💡 Har letter −3 → C−3 = Z (ghoom ke), A−3 = X, T−3 = Q.
Practice (exam-style)

Q3. In a code where A = Z, B = Y, C = X and so on, RAM is written as:

💡 27 − position: R(18)→I, A(1)→Z, M(13)→N.
Practice (exam-style)

Q4. If A = 1, B = 2, C = 3 … then CAB is coded as:

💡 C = 3, A = 1, B = 2 → 312.
Practice (exam-style)

Q5. If BOOK is coded as 2-15-15-11, then PEN is coded as:

💡 Har letter ki position: P = 16, E = 5, N = 14.
Practice (exam-style)

Q6. If FRIEND is coded as GSJFOE, then MOTHER is coded as:

💡 +1 shift → M→N, O→P, T→U, H→I, E→F, R→S.
Practice (exam-style)

Q7. If 'red' is called 'blue' and 'blue' is called 'white', then what is the colour of a clear sky called?

💡 Aasman asal mein blue hai; par 'blue' ko yahan 'white' kehte hain.
Practice (exam-style)

Q8. If SUN is coded as 54, then MOON is coded as:

💡 Positions ka jod: S+U+N = 19+21+14 = 54 → M+O+O+N = 13+15+15+14 = 57.
Practice (exam-style)

Q9. If LOTUS is coded as MPUVT, then ROSE is coded as:

💡 +1 shift → R→S, O→P, S→T, E→F.
Practice (exam-style)

Q10. If CAT is coded as 3120, then DOG is coded as:

💡 Positions jodi hui: D = 4, O = 15, G = 7 → 4157.
Practice (exam-style)

Q11. If HELP is coded as IFMQ, then WORK is coded as:

💡 +1 shift → W→X, O→P, R→S, K→L.
Practice (exam-style)

Q12. If DELHI is written as IHLED, then MUMBAI is written as:

💡 Poora shabd ulta likha jata hai → MUMBAI ulta = IABMUM.
Practice (exam-style)

Q13. If A = 2, B = 4, C = 6 and so on, then the code for CAB is:

💡 Position × 2 → C = 6, A = 2, B = 4 → jod = 12.
Practice (exam-style)

Q14. If MOUSE is coded as PRXVH, then CAT is coded as:

💡 +3 shift (M→P, O→R) → C→F, A→D, T→W.

Coding-decoding ke 5 type hain: shifting (+1, −3), opposite (27 − position), number (position ya jod), reverse word, aur substitution. Tarika ek hi — pehle letter se niyam nikalo, doosre se confirm karo, phir naye shabd par lagao. Do baatein hamesha yaad rakho: alphabet gol chakkar hai (Y+2 = A, C−3 = Z) aur decoding mein niyam ULTA lagta hai. Number coding mein pehle dekho code ek number hai (jod wala) ya kai (positions wala). Aur agar kuch na sujhe to options ko ulta decode karke test kar lo — 4 options mein answer pakka mil jayega. Ye pura chapter Ch 2 ki positions par khada hai! 🚀

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