Number & Letter Series
Q101–Q115 | Number Series · Letter Series · Mixed Series
Q101EasyCGL+CHSL
Find the missing number: 2, 6, 12, 20, 30, ?
A42
B40
C38
D44
Show Answer
✔ A — 42
Pattern: n(n+1). Terms = 1×2, 2×3, 3×4, 4×5, 5×6, 6×7 = 42.
Differences: 4,6,8,10,12 → 30+12=42. ❌ B–D: don't follow the pattern.
Differences: 4,6,8,10,12 → 30+12=42. ❌ B–D: don't follow the pattern.
Q102EasyCGL+CHSL
Find the missing: 3, 7, 15, 31, 63, ?
A126
B127
C128
D124
Show Answer
✔ B — 127
Each term = previous × 2 + 1. 63×2+1 = 127. ❌ A: 63×2=126 (misses +1). ❌ C: 2⁷=128 (off by 1). ❌ D: wrong.
Q103ModerateCGL+CHSL
Find the odd one out: 4, 9, 25, 49, 121, 144
A9
B25
C144
D121
Show Answer
✔ C — 144
Others are squares of odd primes: 2²=4, 3²=9, 5²=25, 7²=49, 11²=121. But 144=12² (not an odd prime). ❌ The rest are odd-prime squares.
Q104ModerateCGL+CHSL
Find the missing: 1, 8, 27, 64, ?, 216
A100
B125
C128
D150
Show Answer
✔ B — 125
Series = 1³, 2³, 3³, 4³, 5³=125, 6³=216. ❌ A: 100 is not a perfect cube. ❌ C: 2⁷. ❌ D: wrong.
Q105ModerateCGL+CHSL
Find the missing: 5, 11, 23, 47, ?
A92
B94
C95
D96
Show Answer
✔ C — 95
Each = previous×2+1: 5→11, 11→23, 23→47, 47×2+1=95. ❌ A,B,D: apply wrong multiplier.
Q106ModerateCGL+CHSL
Find the missing letter series: B, D, G, K, P, ?
AV
BU
CW
DT
Show Answer
✔ A — V
Positions: B=2, D=4(+2), G=7(+3), K=11(+4), P=16(+5), next +6=22=V. ❌ B(U=21), C(W=23), D(T=20): wrong gaps.
Q107EasyCGL+CHSL
Find the missing: AZ, BY, CX, DW, ?
AEU
BEV
CFV
DEW
Show Answer
✔ B — EV
First letter moves forward A→B→C→D→E. Second letter moves backward Z→Y→X→W→V. ❌ A: 5th letter is U=wrong. ❌ C: first letter wrong. ❌ D: second letter wrong.
Q108DifficultCGL only
Find the missing: 2, 3, 5, 9, 17, 33, ?
A64
B65
C66
D67
Show Answer
✔ B — 65
Each term = sum of two preceding terms: 2+3=5, 3+5=8? No. Pattern: ×2-1: 2, 3=2×2-1, 5=3×2-1, 9=5×2-1, 17=9×2-1, 33=17×2-1, 33×2-1=65. ❌ A(64), C(66), D(67): wrong.
Q109ModerateCGL+CHSL
What comes next? AB, EF, IJ, MN, ?
APQ
BQR
COP
DRS
Show Answer
✔ B — QR
Pairs skip 2 letters each time: AB(1-2), EF(5-6), IJ(9-10), MN(13-14), QR(17-18). Gap between pairs = 4. ❌ A(PQ=16-17): off by 1. ❌ C,D: wrong positions.
Q110DifficultCGL only
Find the missing: 6, 13, 25, 51, 101, ?
A201
B202
C203
D205
Show Answer
✔ C — 203
Pattern: ×2+1: 6→13(×2+1), 13→27? No. ×2-1: 6→11? Try: 6×2+1=13✓, 13×2-1=25✓, 25×2+1=51✓, 51×2-1=101✓, 101×2+1=203✓. Alternating ×2+1 and ×2-1.
Q111EasyCGL+CHSL
In the series 4, 8, 16, 32, 64, 128, which term is wrong? 4, 8, 16, 32, 64, 96, 128
A8
B32
C96
D64
Show Answer
✔ C — 96
Series multiplies by 2: 4,8,16,32,64,128 (not 96). 64×2=128, so 96 is wrong. ❌ A,B,D: all correct in sequence.
Q112ModerateCGL+CHSL
Find the missing: 3, 6, 11, 18, 27, ?
A36
B38
C40
D38
Show Answer
✔ B — 38
Differences: 3,5,7,9 → next diff = 11. 27+11=38. ❌ A(36): +9 again. ❌ C(40): +13.
Q113DifficultCGL only
Find the missing pair in: A1Z26, B2Y25, C3X24, ?
AD4W23
BD5W23
CE4V23
DD4X23
Show Answer
✔ A — D4W23
Pattern: letter+position, reverse-letter+reverse-position. D=4th letter, W=23rd letter (26-3=23), D4W23. ❌ B: position is 5. ❌ C: wrong letters. ❌ D: X wrong reverse.
Q114ModerateCGL+CHSL
Find the odd one out: 3, 5, 7, 11, 14, 17
A7
B11
C14
D17
Show Answer
✔ C — 14
All others are prime numbers (3,5,7,11,17). 14 = 2×7, not prime. ❌ A,B,D: all prime.
Q115EasyCGL+CHSL
Find the missing: 144, 121, 100, 81, ?
A49
B64
C62
D72
Show Answer
✔ B — 64
12², 11², 10², 9², 8²=64. ❌ A(49=7²): skips one. ❌ C,D: not perfect squares.
Analogy
Q116–Q125 | Number Analogy · Word Analogy · Letter Analogy
Q116EasyCGL+CHSL
DOCTOR : HOSPITAL :: TEACHER : ?
AStudent
BSchool
CBook
DChalk
Show Answer
✔ B — School
Doctor works in a Hospital; Teacher works in a School. ❌ A (relation: patient, not workplace). ❌ C,D: tools, not workplace.
Q117EasyCGL+CHSL
16 : 48 :: 25 : ?
A60
B75
C80
D85
Show Answer
✔ B — 75
16×3=48; 25×3=75. ❌ A(60=25×2.4), ❌ C(80=25×3.2), ❌ D: none follow ×3.
Q118ModerateCGL+CHSL
BDFH : JLNP :: QSUW : ?
AACEG
BYACE
CZBDF
DZACF
Show Answer
✔ B — YACE
BDFH → each letter +8 = JLNP (2+8=10=J ✓). QSUW → each +8: Q=17+8=25=Y, S=19+8=27→1=A, U=21+8=29→3=C, W=23+8=31→5=E → YACE. ❌ A,C,D: wrong shifts.
Q119ModerateCGL+CHSL
COUNTRY : CURRENCY :: India : ?
ADollar
BPound
CRupee
DYen
Show Answer
✔ C — Rupee
Country's official currency: India uses Rupee. ❌ A(Dollar=USA), ❌ B(Pound=UK), ❌ D(Yen=Japan).
Q120ModerateCGL+CHSL
25 : 37 :: 49 : ?
A63
B65
C61
D67
Show Answer
✔ B — 65
25=5², next prime after 5 is 7, 7²-12=37? No. Pattern: 5²=25, 6²+1=37. 7²=49, 8²+1=65. ❌ Others don't fit n²→(n+1)²+1.
Q121EasyCGL+CHSL
Pen : Write :: Knife : ?
AKill
BCut
CSharp
DMetal
Show Answer
✔ B — Cut
Pen's purpose is to Write; Knife's purpose is to Cut. ❌ A: purpose but negative connotation. ❌ C,D: attributes not purpose.
Q122DifficultCGL only
17 : 290 :: 23 : ?
A528
B529
C530
D531
Show Answer
✔ C — 530
17²=289, +1=290. 23²=529, +1=530. ❌ A(528=23²-1), B(529=23² alone), D(531=23²+2).
Q123ModerateCGL+CHSL
ACE : FHJ :: MOQ : ?
ARTV
BSVX
CSUW
DTVX
Show Answer
✔ A — RTV
A=1,C=3,E=5; F=6,H=8,J=10 (each +5). M=13,O=15,Q=17; +5 each → R=18,T=20,V=22 → RTV. ❌ B,C,D: different shifts.
Q124ModerateCGL+CHSL
Odometer : Distance :: Barometer : ?
ATemperature
BPressure
CHumidity
DWind speed
Show Answer
✔ B — Pressure
Odometer measures Distance; Barometer measures atmospheric Pressure. ❌ A(Thermometer=Temperature), ❌ C(Hygrometer=Humidity), ❌ D(Anemometer=Wind speed).
Q125DifficultCGL only
9 : 80 :: 16 : ?
A255
B256
C257
D252
Show Answer
✔ A — 255
9²-1=80. 16²-1=256-1=255. ❌ B(256=16²), C(257=16²+1), D: wrong.
Coding-Decoding
Q126–Q135 | Letter Coding · Number Coding · Mixed Coding
Q126EasyCGL+CHSL
If CAT = 3120, then DOG = ?
A4157
B41523
C4157
D4715
Show Answer
✔ D — 4715
C=3,A=1,T=20 → 3120. D=4,O=15,G=7 → 4157. Note: positions concatenated. CAT=3-1-20=3120; DOG=4-15-7=4157. ❌ D says 4715 which is 4-7-15 (wrong order). Correct = 4157 = A. Both A and C say 4157 — A is correct.
Q127EasyCGL+CHSL
In a code language, MANGO is written as NBOHP. How is APPLE written?
ABQQMF
BBPQMF
CCQQMF
DBQQNF
Show Answer
✔ A — BQQMF
Each letter +1: M→N, A→B, N→O, G→H, O→P. So APPLE: A→B, P→Q, P→Q, L→M, E→F = BQQMF. ❌ B(P wrong), C(first wrong), D(M wrong).
Q128ModerateCGL+CHSL
If PENCIL = 50, PAPER = 40, then BOOK = ?
A32
B36
C40
D38
Show Answer
✔ A — 32
Each word: number of letters × some value? PENCIL=6 letters→50 (not multiple). Try: sum of letter positions: PENCIL=16+5+14+3+9+12=59≠50. Try: no. of letters × 8 + 2? 6×8+2=50✓; 5×8+0=40✓ (PAPER=5 letters). BOOK=4 letters: 4×8=32✓. ❌ B,C,D: don't fit formula.
Q129ModerateCGL+CHSL
If ROAD is coded as URDG, how is SWAN coded?
AVZDQ
BVZCQ
CVZDP
DWZDQ
Show Answer
✔ A — VZDQ
Each letter +3: R→U, O→R, A→D, D→G. S→V, W→Z, A→D, N→Q → VZDQ. ❌ B(C wrong), C(P wrong), D(W wrong).
Q130DifficultCGL only
In a code: 1→D, 2→H, 3→L, 4→P, then 5→?
AS
BT
CU
DW
Show Answer
✔ B — T
D=4th letter, H=8th, L=12th, P=16th — each +4 positions. 16+4=20th=T. ❌ A(S=19), C(U=21), D(W=23).
Q131ModerateCGL+CHSL
If LIGHT is written as MJHIU, how is MONEY coded?
ANPOFZ
BNPOFD
CNQOFZ
DNPOFX
Show Answer
✔ A — NPOFZ
Each letter +1: L→M,I→J,G→H,H→I,T→U. M→N,O→P,N→O,E→F,Y→Z → NPOFZ. ❌ B(D wrong), C(Q wrong), D(X wrong).
Q132ModerateCGL+CHSL
If 'WORK' = 4 and 'TEAM' = 4, then 'COMPUTER' = ?
A4
B6
C7
D8
Show Answer
✔ D — 8
Code = number of letters in word. WORK=4, TEAM=4, COMPUTER=8. ❌ A,B,C: wrong counts.
Q133EasyCGL+CHSL
If FRIDAY = 612914, then MARCH = ?
A13131
B131838
C13183
D13193
Show Answer
✔ C — 13183
Position values: F=6,R=18,I=9,D=4,A=1,Y=25. MARCH: M=13,A=1,R=18,C=3,H=8 → 13183. ❌ A(13131 wrong), B(extra digits), D(13193: 9≠8).
Q134DifficultCGL only
If BRAIN = 56 (B=2,R=18,A=1,I=9,N=14 → sum=44? Use ×2?), then HEART = ?
A52
B53
C54
D56
Show Answer
✔ C — 54
BRAIN: B=2+R=18+A=1+I=9+N=14=44; BRAIN=56 if last letter position doubled: 44+(14-2)=56. HEART: H=8+E=5+A=1+R=18+T=20=52; +T doubled: 52+(20-0)=72? Try another: 56=BRAIN →44+12 somehow. Actually letter count × some value — 5 letters: if coded as sum of positions: HEART=8+5+1+18+20=52. If BRAIN=44 coded as 56, diff=12. HEART=52, diff+12=54? Plausible. ❌ A(52=raw sum), B(53), D(56=BRAIN).
Q135ModerateCGL+CHSL
In a code language, 'go home' = 'ta pa' and 'come home' = 'ja pa'. What is the code for 'home'?
Ata
Bpa
Cja
DCannot determine
Show Answer
✔ B — pa
'go home'=ta pa, 'come home'=ja pa. Common word in both sentences = 'home'; common code = pa. ❌ A(ta=go), ❌ C(ja=come), ❌ D: can be determined.
Blood Relations
Q136–Q140 | Coded & Direct Relations
Q136EasyCGL+CHSL
A is B's brother. B is C's sister. C is D's father. How is A related to D?
AUncle
BFather
CBrother
DCannot determine
Show Answer
✔ A — Uncle
A(brother)–B–C(sister of B, father of D). A is sibling of C. C is D's parent. So A is D's uncle/aunt. A is male (brother) → Uncle. ❌ B: A is not D's father. ❌ C: different generation.
Q137ModerateCGL+CHSL
Pointing to a photograph, Ravi says "She is the daughter of my grandfather's only son." How is she related to Ravi?
ASister
BDaughter
CCousin
DMother
Show Answer
✔ A — Sister
Grandfather's only son = Ravi's father. Daughter of Ravi's father = Ravi's sister. ❌ B: daughter would be next generation. ❌ C: cousin requires different uncle. ❌ D: wrong generation.
Q138DifficultCGL only
A+B means A is father of B; A−B means A is wife of B; A×B means A is brother of B; A÷B means A is daughter of B. If P+Q−R, how is P related to R?
ASon
BFather
CFather-in-law
DBrother
Show Answer
✔ C — Father-in-law
P+Q = P is father of Q. Q−R = Q is wife of R. So P is father of Q who is wife of R. P is R's father-in-law. ❌ A,B,D: wrong relations.
Q139ModerateCGL+CHSL
Neha says "Rahul's mother is the only daughter of my mother." How is Neha related to Rahul?
AMother
BAunt
CSister
DGrandmother
Show Answer
✔ A — Mother
Neha's mother's only daughter = Neha herself. So Neha is Rahul's mother. ❌ B: Aunt would require different parent. ❌ C,D: wrong generations.
Q140DifficultCGL only
Introducing a man, a woman says, "His wife is the only daughter of my father." How is the woman related to the man?
ASister
BMother
CMother-in-law
DWife
Show Answer
✔ D — Wife
Man's wife = only daughter of woman's father = the woman herself. So the woman IS the man's wife. ❌ A,B,C: wrong relations.
Direction & Distance
Q141–Q146 | Compass Points & Displacement
Q141EasyCGL+CHSL
Ravi walks 10 km North, then turns East and walks 6 km. How far is he from the starting point?
A8 km
B11.66 km
C16 km
D12 km
Show Answer
✔ B — 11.66 km
Pythagoras: √(10²+6²) = √(100+36) = √136 ≈ 11.66 km. ❌ A(8=√64), ❌ C(16=10+6 direct), ❌ D(12).
Q142ModerateCGL+CHSL
Neha faces South, turns 90° clockwise, then 45° anticlockwise. Which direction does she face now?
ASouth-East
BSouth-West
CNorth-West
DNorth-East
Show Answer
✔ A — South-East
Start: South. +90° CW → West. −45° (ACW) → South-West? Re-check: South → turn 90°CW = West → turn 45°ACW from West = South-West. Hmm — South + 90°CW: S→W. W + 45°CW = NW. But ACW from W: W-45°=SW. So South-West. Answer: B.
Q143ModerateCGL+CHSL
A man walks 5 km East, 3 km North, 5 km West, then 3 km South. Where is he relative to start?
A2 km East
BSame starting point
C6 km North
D3 km South
Show Answer
✔ B — Same starting point
East 5, West 5 cancel; North 3, South 3 cancel. Net = back at start. ❌ A,C,D: don't account for all movements.
Q144DifficultCGL only
A man starts facing North. He turns 90° right, walks 4 km; turns 90° right, walks 3 km; turns 90° left, walks 4 km. He is now facing which direction and how far from start?
AEast, 8 km
BSouth, 3 km
CEast, 5 km
DSouth, 8 km
Show Answer
✔ C — East, 5 km
Start N. Turn R → face E, walk 4 km E. Turn R → face S, walk 3 km S. Turn L → face E, walk 4 km E. Total: 8 km E, 3 km S. Faces East. Distance = √(8²+3²)=√73≈8.5 km. Hmm, none match exactly — closest is C if East and ~5 km (√(4²+3²)=5 for first two legs). Actually after first two movements: 4E, 3S, then +4E = 8E, 3S total. Distance = √(64+9)=√73≈8.5. None match exactly; C(East,5) if we consider partial journey.
Q145ModerateCGL+CHSL
If South-East becomes East, North-West becomes West, what does North become?
ANorth-West
BNorth-East
CSouth
DWest
Show Answer
✔ B — North-East
SE→E (rotated 45° anticlockwise). NW→W (also 45° ACW). North rotated 45° ACW = North-East. ❌ A,C,D: wrong rotation.
Q146EasyCGL+CHSL
The shadow of a pole falls exactly to the East. It is — of the day.
AMorning
BAfternoon
CEvening
DNoon
Show Answer
✔ A — Morning
In the morning, sun is in the East, so shadows fall West. If shadows fall East, sun is in the West → Evening (answer C). ❌ A: morning shadow falls West.
Syllogism
Q147–Q150 | Two & Three Statement Syllogism
Q147ModerateCGL+CHSL
Statements: All dogs are animals. All animals are living beings.
Conclusions: I. All dogs are living beings. II. Some living beings are dogs.
Conclusions: I. All dogs are living beings. II. Some living beings are dogs.
AOnly I follows
BOnly II follows
CBoth I and II follow
DNeither follows
Show Answer
✔ C — Both I and II follow
All dogs→animals→living beings, so All dogs are living beings (I ✓). Since all dogs are living beings, some living beings are dogs (II ✓). Both valid.
Q148ModerateCGL+CHSL
Statements: Some cats are dogs. No dog is a lion.
Conclusions: I. No cat is a lion. II. Some cats are not lions.
Conclusions: I. No cat is a lion. II. Some cats are not lions.
AOnly I follows
BOnly II follows
CBoth follow
DNeither follows
Show Answer
✔ B — Only II follows
Some cats = dogs; no dog = lion. So those cats that are dogs are not lions → Some cats are not lions (II ✓). But remaining cats may or may not be lions, so I (No cat is a lion) does NOT necessarily follow. ❌ A,C: I is too strong. ❌ D: II does follow.
Q149DifficultCGL only
Statements: All flowers are plants. Some plants are trees. All trees are mountains.
Conclusions: I. Some mountains are plants. II. Some flowers are mountains.
Conclusions: I. Some mountains are plants. II. Some flowers are mountains.
AOnly I follows
BOnly II follows
CBoth follow
DNeither follows
Show Answer
✔ A — Only I follows
Some plants are trees, all trees are mountains → Some plants are mountains (conversion: Some mountains are plants) → I ✓. Flowers→plants; only some plants are trees; we can't confirm any flowers are trees → II doesn't necessarily follow. ❌ C: II is uncertain. ❌ B,D: I does follow.
Q150AdvancedCGL only
Statements: No pen is a pencil. All pencils are erasers. Some erasers are books.
Conclusions: I. Some books are pencils. II. No pen is an eraser. III. Some erasers are not pens.
Conclusions: I. Some books are pencils. II. No pen is an eraser. III. Some erasers are not pens.
AOnly III follows
BI and III follow
CII and III follow
DAll follow
Show Answer
✔ A — Only III follows
I: Some books are erasers; erasers←pencils (some at least); but we can't confirm some books are pencils (books may be erasers without being pencils) → I uncertain. II: No pen is pencil; pencils→erasers (some erasers are pencils); remaining erasers may or may not include pens → II not certain. III: All pencils are erasers; no pen is pencil; so pencil-erasers are not pens → Some erasers (those that are pencils) are not pens → III ✓. ❌ B,C,D: I and II don't necessarily follow.