Ch 5: Alphabet Test & Word Formation | Reasoning

Dosto, ye chapter Chapter 2 ka bada bhai hai. Wahan positions seekhi thi — yahan un positions par ginti ke sawal hote hain: "left se 20th letter ke 7 left mein kaun?", "ulta alphabet likhein to 10th kaun hoga?"

Doosra hissa hai Word Formation — "kya 'EDUCATION' ke letters se 'TEACHER' ban sakta hai?" Yahan sirf ek cheez dekhni hoti hai: saare letters maujood hain ya nahi (aur kitni baar).

CET Group D mein isse 1–2 questions aate hain. Ye topic students ko confusing lagta hai, par do formule seekh lo — kaam khatam. Chalo! 💪

1. ⭐ Do Formule jo pura chapter cover karte hain

⭐ Formula 1 — Left ↔ Right Right se position = 27 − Left se position (aur ulta bhi)
Formula 2 — "X ke Y left/right mein"
Right mein jaana = position + Y · Left mein jaana = position − Y

Ginne ki zaroorat nahi — position nikalo, phir jodo/ghatao. Bas itna hi.

✏️ Solved Example 1 — "Left se 20th ke 7 left mein?" Step 1: Left se 20th letter = T (EJOTY se)
Step 2: Left mein 7 kadam = 20 − 7 = 13 → M ✓

✏️ Solved Example 2 — "Right se 12th ke 5 right mein?" Step 1: Right se 12th = left se 27 − 12 = 15 → O
Step 2: Right mein 5 kadam = 15 + 5 = 20 → T ✓
⚠️ Pehle right-wali position ko left wali mein badlo, tabhi jodna-ghatana karo.

2. Ulta (Reverse) Alphabet ke Sawal

⭐ Ulta alphabet = Z, Y, X, W … A "Ulte alphabet mein left se nth letter" = seedhe alphabet mein right se nth = position 27 − n
Solved Example: Ulta likhne par left se 10th letter?
→ 27 − 10 = 17 → Q ✓

3. "Beech mein kitne letters?" wale sawal

⭐ Beech ke letters = (badi position − chhoti position) − 1 Solved Example: M aur T ke beech kitne letters hain?
Step 1: M = 13, T = 20
Step 2: 20 − 13 − 1 = 6 ✓ (N, O, P, Q, R, S)
⚠️ −1 lagana zaroori hai, warna ek extra gin jaoge!

4. "Theek beech ka letter" (midway)

⭐ Midway letter = (dono positions ka jod) ÷ 2 Solved Example: E aur U ke theek beech ka letter?
→ (5 + 21) ÷ 2 = 13 → M ✓ (Agar jod visham (odd) aa jaye to beech mein koi ek letter nahi hota — do letters aate hain.)

5. WORD FORMATION — "kaunsa shabd ban sakta hai?"

⭐ Rule: har letter maujood ho, aur UTNI HI BAAR ho Tarika: option ke har letter par ungli rakho aur diye gaye shabd mein dhundo — mil gaya to ✓ (aur us letter ko kaat do taaki dobara na gino).
Solved Example: 'EDUCATION' se kaunsa nahi ban sakta — DATE, CAUTION, AUCTION, TEACHER?
Step 1: DATE (D,A,T,E) ✓ · CAUTION ✓ · AUCTION ✓
Step 2: TEACHER mein H aur R chahiye — EDUCATION mein hai hi nahi → TEACHER ✗

📌 Sabse badi trap — repeat letters 'EDUCATION' mein N sirf ek baar hai, isliye 'NATION' nahi ban sakta (usme do N chahiye — N-A-T-I-O-N). Letter maujood hone ke saath ginti bhi check karo!

6. Letters ko Order mein Lagana

✏️ Solved Examples 'STRONG' ko alphabetical order mein → 3rd letter?
→ G, N, O, R, S, T → teesra = O ✓
'PRACTICE' ko ULTE (reverse) alphabetical order mein → 2nd?
→ T, R, P, I, E, C, C, A → doosra = R ✓

7. Meaningful Word banana (chhote sawal)

✏️ Solved Example — A, E, T se kitne 3-letter shabd? ATE, EAT, TEA → 3 shabd ✓
Tarika: har letter ko pehle rakh ke koshish karo (A se ATE, E se EAT, T se TEA) — jaldi mil jate hain.

✏️ Type 1 — "Xth ke Y left/right mein" Position nikalo → left ke liye ghatao, right ke liye jodo. 20th ka 7 left = 13 = M.

✏️ Type 2 — Right se ginti wala Pehle 27 − n karke left wali position banao, phir aage ka kaam. "Right se 12th ka 5 right" → 15 + 5 = 20 = T.

✏️ Type 3 — Ulta alphabet "Ulte alphabet mein left se nth" = 27 − n. 10th → 17 → Q. (Yaad rakho: ulta likhne par left aur right aapas mein badal jaate hain.)

✏️ Type 4 — Word formation Har option ke letters ko diye gaye shabd mein kaat-kaat kar milao. Repeat letters (do N, do E) sabse badi trap hai.

✏️ Type 5 — Order/ginti wale "Alphabetical order mein 3rd", "kitne letters ek se zyada baar aaye", "beech mein kitne letters" — sab dhyan se ginne wale sawal. Jaldbazi mat karo, ungli rakh ke gino.

Trick 1: Position nikalo, phir jod-ghata
Right = +, Left = −
Ungli se A, B, C ginne mein 30 second jaate hain aur galti bhi hoti hai. EJOTY se position nikalo, phir seedha jodo/ghatao.

Trick 2: Right wali ginti ko pehle badlo
27 − n = left wali position
Jab tak sab kuch left ki bhasha mein na aa jaye, aage mat badho. Yahi sabse common galti hai.

Trick 3: "Beech mein kitne" mein −1 mat bhoolo
(bada − chhota) − 1
M se T = 20−13 = 7, par beech ke letters 6 hain. Ye −1 hi sawal ka asli imtihaan hai.

Trick 4: Word formation mein letters KAATO
Milte hi ✓ lagao, dobara mat gino
Option ka har letter dhundte waqt use kaat do — isse repeat wali trap (do N, do E) apne aap pakdi jayegi.

Trick 5: Options se ulta chalo
Chhote/mushkil option pehle check karo
"Kaunsa nahi ban sakta" wale sawal mein us option se shuru karo jisme anokhe letters (H, R, Z, X) hon — 5 second mein answer.

❌ Galti 1: Right wali position ko seedha use karna "Right se 12th ka 5 right" mein pehle 27−12 = 15 karo, phir +5. Seedha 12+5 = 17 karne par answer galat (Q) aa jayega.

❌ Galti 2: "Beech mein kitne" mein −1 chhod dena M aur T ke beech 6 letters hain, 7 nahi. Dono sire ginti mein nahi aate.

❌ Galti 3: Word formation mein repeat letter na dekhna 'EDUCATION' se NATION nahi banega (do N chahiye, hai ek). Letter dikhte hi ✓ mat lagao — ginti bhi milao.

❌ Galti 4: Ulte alphabet mein direction bhool jana Ulta likhne par "left se 10th" = seedhe mein right se 10th. Do baar ulta karne se wapas wahi ho jata hai — dhyan se.

❌ Galti 5: Left/right ka nishan na lagana Sawal mein "left" aur "right" par pencil se nishan laga do. Ek shabd badalne se pura answer badal jata hai — ye sabse aasan marks hain, aise mat gawao.

Right se position ka formula?tap 👆

27 − left position

"Y left mein" = ?tap 👆

Position − Y (right = + Y)

20th ke 7 left mein?tap 👆

M (20 − 7 = 13)

Right se 12th ke 5 right mein?tap 👆

T (15 + 5 = 20)

Ulte alphabet mein left se 10th?tap 👆

Q (27 − 10 = 17)

Beech ke letters ka formula?tap 👆

(bada − chhota) − 1

M aur T ke beech kitne letters?tap 👆

6 (N,O,P,Q,R,S)

Midway letter kaise?tap 👆

Dono positions ka jod ÷ 2

E aur U ke theek beech?tap 👆

M ((5+21)/2 = 13)

14th letter from left?tap 👆

N (13th = M)

Word formation ka rule?tap 👆

Har letter maujood + utni hi baar

'EDUCATION' se NATION banega?tap 👆

Nahi — do N chahiye, hai ek

'EDUCATION' se TEACHER banega?tap 👆

Nahi — H aur R hai hi nahi

'STRONG' alphabetical mein 3rd?tap 👆

O (G,N,O,R,S,T)

A, E, T se kitne shabd?tap 👆

3 — ATE, EAT, TEA

'REASONING' mein repeat letter?tap 👆

N (do baar) — sirf 1 letter

Word formation mein pehle kaunsa option?tap 👆

Jisme anokhe letters (H, R, X, Z) hon

Sabse zaroori aadat?tap 👆

Left/right par nishan lagana

Sawal	Formula
Right se position	27 − left
Y left mein jaana	position − Y
Y right mein jaana	position + Y
Ulte alphabet mein left se nth	27 − n
Beech ke letters	(bada − chhota) − 1
Theek beech ka letter	(jod) ÷ 2
Word ban sakta hai?	Har letter + ginti milao
EJOTY	E-5, J-10, O-15, T-20, Y-25
13th / 14th letter	M / N
20th ka 7 left	M
M–T ke beech	6 letters
Sabse badi trap	Repeat letters (do N, do E)

🎯 Score: 0 / 0 Total questions: 14

Practice (exam-style)

Q1. Which letter is 7th to the left of the 20th letter from the left in the English alphabet?

💡 20th = T; 20 − 7 = 13 → M.

Practice (exam-style)

Q2. Which letter is 5th to the right of the 12th letter from the right end?

💡 Right se 12th = 27−12 = 15 (O); 15 + 5 = 20 → T.

Practice (exam-style)

Q3. If the English alphabet is written in reverse order, which letter will be 10th from the left?

💡 Ulta likhne par left se 10th = seedhe mein 27−10 = 17 → Q.

Practice (exam-style)

Q4. How many letters are there between M and T in the English alphabet?

💡 (20 − 13) − 1 = 6 → N, O, P, Q, R, S.

Practice (exam-style)

Q5. Which is the 14th letter from the left in the English alphabet?

💡 13th = M, to 14th = N (beech ka jodha M–N).

Practice (exam-style)

Q6. Which word CANNOT be formed using the letters of the word 'EDUCATION'?

💡 TEACHER mein H aur R chahiye — EDUCATION mein ye letters hain hi nahi.

Practice (exam-style)

Q7. Which word CAN be formed using the letters of the word 'TRIANGLE'?

💡 T, I, G, E, R — chaaron TRIANGLE mein maujood hain (MANGO mein M/O nahi, SILVER mein S/V nahi, PENCIL mein P/C nahi).

Practice (exam-style)

Q8. If the letters of the word 'STRONG' are arranged in alphabetical order, which letter comes third?

💡 G, N, O, R, S, T → teesra = O.

Practice (exam-style)

Q9. How many meaningful three-letter English words can be formed using the letters A, E and T (each letter used only once)?

💡 ATE, EAT, TEA — teen meaningful shabd.

Practice (exam-style)

Q10. Which letter lies exactly midway between E and U?

💡 E = 5, U = 21 → (5+21)/2 = 13 → M.

Practice (exam-style)

Q11. If the letters of the word 'PRACTICE' are arranged in reverse alphabetical order, which letter comes second?

💡 Ulta kram: T, R, P, I, E, C, C, A → doosra = R.

Practice (exam-style)

Q12. Which letter is 4th to the right of the 12th letter from the left?

💡 12th = L; 12 + 4 = 16 → P.

Practice (exam-style)

Q13. In the word 'REASONING', how many letters appear more than once?

💡 R-E-A-S-O-N-I-N-G mein sirf N do baar aata hai → 1 letter.

Practice (exam-style)

Q14. If every alternate letter of the English alphabet starting from B (i.e. B, D, F …) is dropped, how many letters remain?

💡 26 mein se 13 (B, D, F … Z) hate → 13 bache (A, C, E … Y).

Do formule pura chapter cover karte hain: right se position = 27 − left, aur left jaana = ghatao, right jaana = jodo. Right wali ginti aaye to pehle use left mein badlo, tabhi aage badho — yahi sabse badi galti hai. "Beech mein kitne letters" mein −1 lagana mat bhoolna (M–T = 6), aur "theek beech ka letter" ke liye positions ka average le lo. Word formation mein sirf letter maujood hona kaafi nahi — ginti bhi milao (EDUCATION se NATION nahi banega, do N chahiye). Aur ek aadat daal lo: sawal mein left/right par nishan lagana — ye sabse aasan marks hain! 🚀