General Studies (Paper I)
Poverty Indices Mnemonic: "HMP Gets Gold" — HPI (Human Poverty Index), MPI (Multidimensional Poverty Index), GHI (Global Hunger Index), GII (Gender Inequality Index), GDI (Gender Development Index). Remember sequence for development economics questions.
Climate Conference Years: "Rio+20 = 2012 anchor" — 1992 Rio Earth Summit + 20 years = 2012 Rio+20. Then Paris 2015 (+3), Glasgow COP26 2021 (+6). Use 1992 as base for calculating UN climate milestones.
Biodiversity Hotspots in India (4): "WISE Hotspots" — Western Ghats, Indo-Burma, Sundaland (Nicobar), Eastern Himalayas. All four recognized by Conservation International; frequently tested in ecology sections.
GDP Components: "GINCE" — Government spending, Investment, Net exports (exports-imports), Consumption, Expenditure method. Use for national income accounting questions; remember all five components sum to GDP.
Five-Year Plan Launch Years: "1951 + 5n" — First Plan 1951-56. Each plan = 5 years, so 12th Plan = 1951 + (11×5) = 2006 start +6 years = 2012-17. Quick mental math for plan periods.
BRICS Formation Chronology: "BRIC 2009, +S 2010" — Original four (Brazil, Russia, India, China) formalized 2009 Yekaterinburg Summit; South Africa joined 2010. Remember 2009-10 back-to-back events.
Arunachal Pradesh — Tribes, Culture, Geography & Administration
Article 371H Memory: "H for Hills-Arunachal (1986)" — Article 371H applies specifically to Arunachal Pradesh (statehood 1987, but Article came 1986). Covers Governor's special responsibilities for law/order, tribal land, religious practices.
Major Tribes Count: "26 Major + 110 Sub-tribes" — Officially 26 major tribes in AP. Largest groups: Nyishi (largest), Adi, Galo, Apatani, Mishmi (remember "NAGAM" for top 5).
Donyi-Polo Meaning: "Sun-Moon" — Donyi = Sun (female), Polo = Moon (male). Indigenous animistic faith of Tani group tribes. Literally translates as "Sun-Moon" faith.
Three Mountain Ranges: "PHD Mountain" — Patkai, Himalayas, Dafla hills. These three major ranges define Arunachal's geography from east to west; remember "PHD" for directional sweep.
Hydropower Potential Number: "50,000 MW" — Arunachal Pradesh has ~50,000 MW hydropower potential (largest in India). Remember round figure; actual developed capacity is under 2,000 MW currently.
District Count Change: "25 Districts (2021)" — From 16 districts pre-2000 to 25 by 2021. New districts: Pakke-Kessang, Lepa Rada, Shi-Yomi (recent additions 2018-21). Update regularly.
Civil Services Aptitude Test (Paper II)
Divisibility by 11: "Alternating Sum" — Subtract alternating digits: (1st+3rd+5th...) − (2nd+4th+6th...). If result is 0 or divisible by 11, original number is. Example: 121→(1+1)−2=0, divisible.
Data Interpretation: "RTQC Method" — Read (full question), Table/graph (check units, scale), Quick-scan (spot max/min), Calculate (only what's asked). Saves 30-40 seconds per DI question.
Syllogism Venn Diagrams: "All/Some/No Rules" — "All A are B" = A circle inside B. "Some A are B" = overlapping circles. "No A are B" = separate circles. Draw for every syllogism statement.
Number Series Pattern Check: "DMDPS" — Check Difference, Multiplication, Division, Powers, Squares in sequence. 90% of number series follow one of these five operations between consecutive terms.
Coded Inequality: "A≥B≥C means A>C always" — In coded relations, chained inequalities guarantee outer extremes. If A≥B and B≥C, then A>C definitely true; saves time in elimination rounds.
Seating Arrangement: "Fix One Person First" — Always anchor one person's position first (usually most constrained). Then place others relative to fixed point. Reduces permutations by 60-70% in circular/linear arrangements.