General Knowledge
Chronological Order of Freedom Struggle Events — Remember "CNJQG" (Can't Neglect Jawaharlal's Quest for Gandhi): 1885 Congress formation, 1905 Bengal Partition, 1919 Jallianwala Bagh, 1930 Salt March (Quit India 1942 follows naturally).
Five-Year Plans Focus Mnemonic — "AI-FISC": 1st Plan=Agriculture, 2nd=Industry, 3rd=Famine response, 4th=Industry again, 5th=Self-reliance, continuing pattern helps recall developmental priorities.
Karnataka's Western Ghats Districts — "USHACK MD": Uttara Kannada, Shivamogga, Hassan, Chikmagalur, Kodagu, Mysuru, Dakshina Kannada—all seven districts touching Western Ghats for geography questions.
Major Kannada Literary Periods — "AVH-NM": Adi Kavi (Pampa), Vachana (Basavanna), Halegannada, Navya (Modern), Navodaya—tracks 900 years of Kannada literature evolution chronologically.
Environment Summit Years — Stockholm=72, Rio=92, Kyoto=97, Paris=2015. Pattern: Rio exactly 20 years after Stockholm; Kyoto 5 years later; Paris ends in 5.
Bharat Ratna to Kannada Personalities — Only CNR Rao (2014) has received it from Karnataka; no literary figures yet—eliminates wrong MCQ options quickly.
Mental Ability & Reasoning
Direction Sense Clock Method — Face North=12 o'clock position. Right turn=clockwise, Left=anticlockwise. 90°=3 hours, 180°=6 hours, 45°=1.5 hours. Converts direction problems into clock math.
Blood Relations Gender Trap — Words like "doctor," "engineer," "teacher" have NO gender unless specified. Don't assume; many exam questions exploit this assumption deliberately.
Coding Pattern "EJOTY" — If A=1, E=5, J=10, O=15, T=20, Y=25: check if coded numbers are multiples of 5. Common pattern in police exams for letter-to-number coding.
Syllogism "AEIOU" Rule — All/No statements (A/E) are universal; Some statements (I/O) are particular. Draw Venn diagrams: All=complete overlap; No=no overlap; Some=partial overlap minimum.
Series: Difference of Differences — If first differences don't show pattern, check second differences. E.g., 2,5,10,17,26: differences are 3,5,7,9 (arithmetic progression of +2).
Ranking Formula — Total persons = Rank from left + Rank from right − 1. Most common trap: forgetting to subtract 1 (double-counting the person).
Mirror Image Quick Check — Only vertical symmetry matters for left-right mirror. Letters like A,H,I,M,O,T,U,V,W,X,Y stay same; others reverse. Ignore top-bottom.
Mathematics
Divisibility by 11 Trick — Alternate digit sum difference: 8173→(8+7)−(1+3)=11, divisible. Sum odd positions minus even positions; if result is 0 or divisible by 11, original number is too.
Percentage-Fraction Equivalents — 12.5%=1/8, 16.67%=1/6, 20%=1/5, 25%=1/4, 33.33%=1/3, 37.5%=3/8, 62.5%=5/8, 87.5%=7/8. Memorize these 8 for instant calculation without pen-paper.
Time-Distance: Relative Speed — Same direction: subtract speeds. Opposite direction: add speeds. Trains crossing/overtaking: add lengths, then apply speed formula. Covers 80% train problems.
Simple Interest Shortcut — SI for 2 years at R% = (P×R×2)/100. If principal doubles in n years, Rate=100/n%. If rate and time equal, SI=P×R²/100.
Profit % When Cost Price Unknown — If SP1 at 10% loss and SP2 at 20% profit differ by ₹30, then CP=(Difference)/(% difference)×100 = 30/30×100=₹100. Cross-multiply formula.
Average: Middle Term Method — For consecutive numbers or AP series, average=middle term. For 5 consecutive numbers from x: avg=(x+2). Saves calculation time dramatically.
Compound Interest for 2 Years — CI−SI = PR²/10000. The difference between 2-year CI and SI equals this formula; eliminates full compound calculation.
Mensuration: Cube Diagonals — Body diagonal of cube with side 'a' = a√3. Face diagonal = a√2. Surface area = 6a². Volume = a³. Four formulas cover all cube questions.
Ratio Equalization Trick — To compare A:B=2:3 and B:C=4:5, make B common: multiply first by 4, second by 3 → 8:12:15. LCM method for ratio questions.
Kannada Language (ಕನ್ನಡ)
Sandhi Types "ಸ್ವಾ-ವ್ಯಾ-ವಿ" — ಸ್ವರ ಸಂಧಿ (vowel), ವ್ಯಂಜನ ಸಂಧಿ (consonant), ವಿಸರ್ಗ ಸಂಧಿ (visarga). Three major categories; if not vowel-to-vowel or visarga ending, it's vyanjana sandhi.
Kala (Tense) Time Words — ಭೂತಕಾಲ (past) with ದ/ತು/ಇದ; ವರ್ತಮಾನ (present) with ಉತ್ತ/ಅತ್ತ; ಭವಿಷ್ಯತ್ (future) with ಉವ/ಅ. Suffix endings identify tense instantly in grammar questions.
Varnamala Vowel Count — Kannada has 13 vowels (ಅ to ಅಃ) and 34 consonants. Total 47 basic letters. Common MCQ asks "How many svara/vyanjana?"