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Mental ability

Classification notes

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वर्गीकरण

Classification is a topic in Reasoning & Mental Ability (Mental ability) for RVUN JA / CA-II (RVUN/Rectt.-2026-27/03).

Subject 1 · Mental ability. Basic se pro — class naam do, jo class se bahar hai wahi tick. Words, numbers, letters, pairs.

1. Ye topic hai kya?

Pehle class ka naam bolo (dhatu, phool, planet), phir jo us naam se bahar hai. Leftover tick tab, jab class lock ho.

Odd man out alag: wahan property (prime / square / +2 letter) — class-naam nahi poochha. Yahan category + pair-rishta.

Analogy se farq

Analogy: A:B ka rishta C pe copy. Yahan :: nahi — set mein leftover, lekin pehle class naam.

Odd man se

Wahan 3,5,7,9,11 → 9 not prime. Yahan Copper Iron Gold Wood → class = dhatu, leftover Wood. Same leftover, alag soch.

2. Paper pe dimag kaise chale

Pehle class ka naam, phir leftover:
1) Words — dhatu, phool, planet, weekday, abstract noun, polygon…
2) Numbers — prime / even / ÷n / square / cube
3) Letters — vowel, consecutive, opposite
4) Pairs — har pair ka same rishta (square, auzar-kaam). Jo pair alag rishta rakhe, odd
5) Jo rule sirf ek ko kaate, wahi
Galati: “yeh word mujhe kam aata” tick. Class lock pehle. Do leftover aayein to rule badlo.

3. Word classification

Sabse zyada yahi. Class ek shabd mein bolo, phir jo us shabd se bahar.

ClassAndarBahar (odd)
DhatuCopper, Iron, GoldWood
PhoolRose, Lily, LotusCabbage
PolygonSquare, Rectangle, TriangleCircle
PlanetMercury, Venus, EarthMoon
Abstract nounHonesty, Bravery, KindnessBeautiful (adjective)
AnaajWheat, Rice, BarleyApple
Basic · dhatu

Q1. Copper, Iron, Gold, Wood — class ka naam, leftover?

Solution shuru

  1. Step 1 — class

    Pehle teen dhatu. Wood lakdi. Class = dhatu, leftover Wood. (Odd-man soch: “property metal” — yahan naam pehle.)

Final answer — yahan khatamClass dhatu · leftover Wood
Basic · phool

Q2. Rose, Lily, Lotus, Cabbage

Solution shuru

  1. Step 1

    Teen phool. Cabbage sabzi.

Final answer — yahan khatamCabbage
Medium · polygon

Q3. Square, Rectangle, Triangle, Circle

Solution shuru

  1. Step 1

    Sab shape hain — koi leftover nahi. Rule kamzor.

  2. Step 2

    Pehle teen polygon (seedhi sides). Circle curved, polygon nahi.

Final answer — yahan khatamCircle
Medium · grammar

Q4. Honesty, Bravery, Kindness, Beautiful

Solution shuru

  1. Step 1

    Honesty, Bravery, Kindness — guna, noun. Beautiful — visheshan (adjective).

Final answer — yahan khatamBeautiful
Basic · planet

Q5. Mercury, Venus, Earth, Moon

Solution shuru

  1. Step 1

    Teen planet. Moon upgrah (satellite), planet nahi.

Final answer — yahan khatamMoon

4. Numbers aur letters

Class = “sab cube” / “sab consecutive letters”. Method Odd man out jaisa; examples yahan alag.

Medium · cube

Q6. 27, 64, 125, 216, 343, 512, 900

Solution shuru

  1. Step 1

    3³=27 … 8³=512. 9³=729. 900 cube nahi (30²=900).

Final answer — yahan khatam900
Basic · letters

Q7. PQR, STU, VWX, YAC

Solution shuru

  1. Step 1

    PQR, STU, VWX — teen consecutive. YAC consecutive nahi (YZA hota wrap pe).

Final answer — yahan khatamYAC

5. Pair classification

Har option khud ek jod hai. Teen jodon mein same rishta, chauthe mein alag. Analogy ka ulta: yahan leftover pair.

Medium · number pair

Q8. Odd pair: 3:9, 4:16, 5:25, 6:32

Solution shuru

  1. Step 1

    3²=9, 4²=16, 5²=25. 6²=36, line mein 32. 6:32 square nahi.

Final answer — yahan khatam6:32
Medium · word pair

Q9. Carpenter : Furniture, Poet : Poem, Baker : Bread, Teacher : School

Solution shuru

  1. Step 1

    Pehle teen: kaarigar aur uski banai cheez. Teacher : School = kaam-jagah, product nahi.

Final answer — yahan khatamTeacher : School
Basic · synonym class

Q10. Big, Large, Huge, Tiny

Solution shuru

  1. Step 1

    Big, Large, Huge — bada (synonym). Tiny — chhota, class se bahar.

Final answer — yahan khatamTiny

6. Pro checklist

  1. Class ka naam ek shabd: dhatu / phool / cube / consecutive.
  2. “Sab shapes” kamzor ho to tighter class (polygon).
  3. Pairs: har jod pe same analogy-rishta; jo tootey odd.
  4. Do leftover → doosri class try.
  5. Series ka next yahan nahi nikaalna.

7. Practice

Pehle khud socho, phir neeche solution kholo. Q1–Q10 yahan nahi dohraaye.

Basic

Practice 1. Violin, Guitar, Flute, Book

Solution shuru

  1. Step 1

    Teen saaz. Book kitaab.

Final answer — yahan khatamBook
Basic

Practice 2. Wheat, Rice, Barley, Apple

Solution shuru

  1. Step 1

    Teen anaaj. Apple phal.

Final answer — yahan khatamApple
Medium

Practice 3. Cricket, Hockey, Football, Chess

Solution shuru

  1. Step 1

    Teen outdoor/field, ball. Chess board game, indoor, ball nahi.

Final answer — yahan khatamChess
Medium

Practice 4. 16, 36, 64, 81, 100, 121, 144, 160

Solution shuru

  1. Step 1

    4²=16 … 12²=144. 13²=169. 160 square nahi.

Final answer — yahan khatam160
Basic

Practice 5. BCDF, GHJK, LMNP, AEIO

Solution shuru

  1. Step 1

    Pehle teen groups consonants. AEIO vowels.

Final answer — yahan khatamAEIO
Basic

Practice 6. 7:14, 8:16, 9:18, 10:21

Solution shuru

  1. Step 1

    ×2: 7×2=14, 8×2=16, 9×2=18. 10×2=20, line mein 21.

Final answer — yahan khatam10:21
Medium

Practice 7. Pen : Write, Knife : Cut, Gun : Shoot, Table : Wood

Solution shuru

  1. Step 1

    Teen auzar–kaam. Table : Wood = cheez–maal, kaam nahi.

Final answer — yahan khatamTable : Wood
Medium

Practice 8. Sphere, Cylinder, Cube, Circle

Solution shuru

  1. Step 1

    Teen 3D. Circle 2D.

Final answer — yahan khatamCircle
Basic

Practice 9. Monday, Friday, Sunday, Calendar

Solution shuru

  1. Step 1

    Teen din. Calendar din nahi, unki list.

Final answer — yahan khatamCalendar
Pro

Practice 10. 2:4, 3:9, 4:16, 5:20

Solution shuru

  1. Step 1

    2²=4, 3²=9, 4²=16. 5²=25, line 20. ×2 hota to 3:6 hota, 3:9 nahi — square class, 5:20 odd.

Final answer — yahan khatam5:20

8. Itna kaafi hai kya?

Agar tum class ka naam lock karke leftover nikaal sako — words, cubes/squares, consecutive letters, pair-rishta — to JA/CA-II ke classification basic se pro tak attempt ho sakte hain.

Agle topic: Alphabet / letter test.

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More in Mental ability

  • Analogy notes — Subject 1 · Mental ability. Basic se pro — word, number, letter, pair. Pehle jo jod hai, wahi rishta teesre pe lagaao.
  • Alphabet / letter test notes — Subject 1 · Mental ability. Basic se pro — left/right, beech, opposite, jumble, word se letter, pairs.
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These Reasoning & Mental Ability notes for RVUN JA / CA-II belong to the RVUN JA / CA-II syllabus on noteswale.