General Knowledge & Current Affairs
BRICS Expansion Mnemonic — Remember new BRICS members (2023) as "SAUIE": Saudi Arabia, Argentina, UAE, Iran, Egypt alongside original Brazil, Russia, India, China, South Africa.
Budget Days (26th Rule) — Union Budget presented on February 1st since 2017; Railway Budget merged in 2017. Remember: Pre-2017 = last day of Feb, Post-2017 = Feb 1st.
Monsoon Months — Southwest monsoon: JJAS (June-July-August-September); Northeast monsoon (winter): ONDJ (October-November-December-January) affects Tamil Nadu coast.
NITI Aayog Formation — Replaced Planning Commission on 1-1-15 (January 1, 2015). Mnemonic: "New India Through Innovation" starting New Year 2015.
Major Ports Digit Sum — India has 12 major ports (13 if Vadhavan included after 2024). Remember as 1+2=3 coasts (West+East+Island cluster at mainland).
Geography of India
Western Ghats States — GK-MaTaKaGo: Gujarat, Karnataka, Maharashtra, Tamil Nadu, Karnataka, Goa (6 states, south to north main coverage).
Tropic of Cancer States — RMGWTM: Rajasthan, Madhya Pradesh, Gujarat, West Bengal, Tripura, Mizoram (8 states; remember "RaM GuWaTriMi" – 8 crossings at 23.5°N).
River Direction Trick — East-flowing: Godavari, Krishna, Cauvery, Mahanadi (drains to Bay); West-flowing: Narmada, Tapi (drains to Arabian Sea) — "Bay Gets More, Arabs Get Less".
Highest Peaks Mnemonic — K2-Kanchenjunga-Nanda Devi: "K-K-N" at 8611m, 8586m, 7816m respectively (descending order, first two in 8000s).
History of Goa
Portuguese Rule Timeline — 1510-1961 (451 years). Remember: Afonso de Albuquerque conquered 15-10 (flip for 1510); Liberation 19-61 (reverse for 1961).
Liberation Day — December 19, 1961 (Operation Vijay). Mnemonic: "1-9-6-1" digits sum to 17, Goa became 17th state cluster timing.
Economy of Goa
Three Pillars Mnemonic — Goa's economy: TIM — Tourism (60% GDP contribution), Iron ore Mining, Manufacturing/Pharma. Remember as "TIM visits Goa".
Iron Ore Districts — North Goa (Bicholim) and South Goa (Sanguem, Quepem). Mnemonic: "BiS-Q" (Biscuit) — B-S-Q mining zones.
Geography of Goa
Wildlife Sanctuaries (4+2) — "BMCM-NB": Bondla, Mhadei, Cotigao, Molem (4 sanctuaries) + Netravali, Bhagwan Mahavir (2 National Parks, Molem overlaps with BM).
River Mnemonic — Six major rivers: "MaTaZuMaCh-Sa" — Mandovi, Terekhol, Zuari, Mapusa, Chapora, Sal (Mandovi-Zuari are largest twins).
General Intelligence, Reasoning & Numerical Aptitude
Divisibility by 11 — Alternating digit sum: (sum odd positions) - (sum even positions) = 0 or multiple of 11. Example: 121→(1+1)−2=0✓.
Calendar Day Trick — Odd days: Ordinary year=1, Leap=2; Century: 1600/2000=0, 1700/1900=5, 1800=3. Add digits, divide by 7 for remainder = day shift.
Clock Angle Formula — |30H - 5.5M| where H=hour, M=minutes. Quick: At 3:15, angle = |90−82.5| = 7.5°.
Percentage-Fraction Shortcuts — 12.5%=1/8, 16.67%=1/6, 33.33%=1/3, 37.5%=3/8, 62.5%=5/8, 87.5%=7/8. Memorize these 6 for rapid calculations.
Series Pattern (AP/GP) — AP: constant difference; GP: constant ratio. Quick check: subtract consecutive terms (AP) or divide (GP) to verify consistency instantly.
Data Interpretation Bar Trick — Approximate bar heights to nearest 5 or 10; calculate percentage changes using base-10 shortcuts before exact computation to eliminate wrong options fast.