Pariksha SaathiPercentages
Choose the right base, reverse changes, and compare weighted percentages with worked examples.
हिंदी में पढ़ें →Lesson library
Start with a concept or a list of key facts, then attempt the practice questions before revealing the answers. Choose a subject below.
These lessons build topic skills; they are not a complete syllabus or a prediction of exam questions. Check the exam pages and the current official notification when planning your preparation.
Quantitative Aptitude
Profit and Loss
Builds on percentages — CP, SP, discount and marked price, worked out.
हिंदी में पढ़ें →Simple & Compound Interest
The one distinction that matters, plus a shortcut worth memorising.
हिंदी में पढ़ें →Time, Speed and Distance
Unit conversion and the average-speed trap, with trains thrown in.
हिंदी में पढ़ें →Ratio and Proportion
The foundation for ages, mixtures and partnership questions.
हिंदी में पढ़ें →Average
The formula reversed — going from average back to sum.
हिंदी में पढ़ें →Time and Work
Convert everyone to a daily rate, combine, then convert back.
हिंदी में पढ़ें →Mixture and Alligation
The weighted-average formula, run backwards to find a ratio.
हिंदी में पढ़ें →Mensuration
Picking the right formula and plugging in carefully.
हिंदी में पढ़ें →Simplification
BODMAS order, not left-to-right — a speed test more than a difficulty test.
हिंदी में पढ़ें →Partnership
Why profit splits by capital × time, not capital alone.
हिंदी में पढ़ें →Boat and Stream
Time, Speed and Distance in a different costume — convert, then apply.
हिंदी में पढ़ें →LCM and HCF
Prime factorization, plus the one shortcut connecting the two.
हिंदी में पढ़ें →Problems on Ages
Algebra in disguise — one variable, carried through every condition.
हिंदी में पढ़ें →Permutation and Combination
One question decides the formula: does the order of arrangement matter?
हिंदी में पढ़ें →Probability
Careful counting — favorable outcomes over total outcomes.
हिंदी में पढ़ें →Pipes and Cisterns
Time and Work with a twist — an outlet pipe gets a negative rate.
हिंदी में पढ़ें →Number System
Divisibility shortcuts, plus how remainders behave under addition and multiplication.
हिंदी में पढ़ें →Surds and Indices
A handful of fixed rules for combining powers of the same base.
हिंदी में पढ़ें →Data Interpretation
Ordinary percentage and average arithmetic, read carefully off a table.
हिंदी में पढ़ें →Quadratic Equations
Solve two equations, compare every pair of roots, then read off the relationship.
हिंदी में पढ़ें →Approximation
Round every number first — the goal is close, not exact.
हिंदी में पढ़ें →Problems on Trains
The same Time-Speed-Distance method, plus the train’s own length.
हिंदी में पढ़ें →Races and Games
"Start" and "beats by" — comparing how far each runner has gone.
हिंदी में पढ़ें →Simple Equations
The hard part is translating the sentence into algebra, not solving it.
हिंदी में पढ़ें →Height and Distance
One right triangle, one of three standard angles — 30°, 45°, or 60°.
हिंदी में पढ़ें →Chain Rule
Three or more quantities at once — chain the ratios, don’t guess.
हिंदी में पढ़ें →Geometry: Lines, Angles and Triangles
The angle sum of a triangle, and how an exterior angle relates to it.
हिंदी में पढ़ें →Mean, Median and Mode
Three different "typical values" — a sum, a sort, and a count.
हिंदी में पढ़ें →Trigonometric Ratios and Identities
sin²θ + cos²θ = 1, and what it unlocks — directly, not word problems.
हिंदी में पढ़ें →Compound Interest: Half-Yearly & Quarterly
Same formula — just adjust the rate and the number of periods first.
हिंदी में पढ़ें →Mean, Third and Fourth Proportional
Completing a proportion with a missing term — set it up, then cross-multiply.
हिंदी में पढ़ें →Set Theory
One formula — add the two group sizes, subtract the overlap.
हिंदी में पढ़ें →Algebraic Identities
Find a²+b² or ab without ever solving for a and b individually.
हिंदी में पढ़ें →Circular Permutations
Arranging people around a table — one fixed seat removes the rotation duplicates.
हिंदी में पढ़ें →Banker’s Discount and True Discount
A future bill’s present worth, versus what a banker charges upfront.
हिंदी में पढ़ें →Stocks and Shares
Face value, market value, and dividend — three values, one investment.
हिंदी में पढ़ें →HCF and LCM of Fractions
The same method as whole numbers — but the denominator rule flips.
हिंदी में पढ़ें →Pie Chart
Data Interpretation with categories as a share of 360° instead of a table.
हिंदी में पढ़ें →Bar Graph
Read each value off a bar's height, then it's the same DI arithmetic.
हिंदी में पढ़ें →Line Graph
Same DI arithmetic as a bar graph, just read off a sloped line instead.
हिंदी में पढ़ें →Successive Discount
Two discounts don’t add up — the second one bites into an already-cut price.
हिंदी में पढ़ें →Work and Wages
Wages split by work completed — combine each worker’s rate with time worked.
हिंदी में पढ़ें →Reasoning
Blood Relations
A clear approach to tracing relationships, not just answers to memorise.
हिंदी में पढ़ें →Coding-Decoding
Common coding patterns, decoded step by step.
हिंदी में पढ़ें →Syllogism
Pure logic, not real-world knowledge — the Venn-diagram approach that works.
हिंदी में पढ़ें →Direction Sense
Plot it on a grid and it turns into simple coordinate geometry.
हिंदी में पढ़ें →Number Series
Recognise and test common number patterns.
हिंदी में पढ़ें →Analogy
Name the relationship precisely before you look at the options.
हिंदी में पढ़ें →Seating Arrangement
Sketch the row, fill in what’s forced, then eliminate the rest.
हिंदी में पढ़ें →Inequality
Chains of coded symbols, and the counterexample trick for ruling conclusions out.
हिंदी में पढ़ें →Calendar
Counting odd days, and the century-year leap-year exception.
हिंदी में पढ़ें →Clock
A disguised speed problem — two hands moving at fixed rates.
हिंदी में पढ़ें →Alphabet Series
Number Series with letters — convert to positions and solve the same way.
हिंदी में पढ़ें →Classification
Finding the exact rule the majority share, not just a hunch.
हिंदी में पढ़ें →Venn Diagram
Inclusion-exclusion — add the groups, subtract what got counted twice.
हिंदी में पढ़ें →Ranking and Order
One small formula connecting rank from the top, the bottom, and the total.
हिंदी में पढ़ें →Statement and Assumption
The "if this were false, would it still make sense?" test.
हिंदी में पढ़ें →Statement and Conclusion
Decide what follows logically without adding assumptions.
हिंदी में पढ़ें →Data Sufficiency
Judging whether the data is enough — not computing the final answer.
हिंदी में पढ़ें →Floor-Based Puzzles
Seating Arrangement turned on its side — the same method, vertically.
हिंदी में पढ़ें →Course of Action
Judging whether a response is practical and proportionate, not just well-intentioned.
हिंदी में पढ़ें →Input-Output
Apply a fixed machine rule step by step, then read off a position.
हिंदी में पढ़ें →Statement and Argument
Judging whether a reason is specific and weighty, not just plausible-sounding.
हिंदी में पढ़ें →Mathematical Operations
Substitute the swapped symbols first, then apply the usual order of operations.
हिंदी में पढ़ें →Word Formation
Careful letter-by-letter accounting, not a guessing game.
हिंदी में पढ़ें →Cause and Effect
Deciding whether one statement causes the other, or neither.
हिंदी में पढ़ें →Scheduling Puzzle
Seating Arrangement’s method, applied to a calendar instead of a row.
हिंदी में पढ़ें →Coded Relationships
Blood relations with a symbol key — decode, then trace the family tree.
हिंदी में पढ़ें →Wrong Number Series
Number Series in reverse — spot the term that breaks the pattern.
हिंदी में पढ़ें →Double Row Seating
Two rows facing each other — Seating Arrangement, doubled.
हिंदी में पढ़ें →Comparison Puzzles
Taller, shorter, heavier — merge the clues into one ordered chain.
हिंदी में पढ़ें →Cubes and Dice
Standard dice, cube nets and painted cubes — choose the right method before calculating.
हिंदी में पढ़ें →Family Tree (Blood Relations)
Blood Relations at a larger scale — build the tree, then read off every answer.
हिंदी में पढ़ें →Odd Pair Out
Classification for pairs — three share a relationship, one breaks it.
हिंदी में पढ़ें →Logical Sequence of Words
Ordering by hierarchy, real-world process, or dictionary order.
हिंदी में पढ़ें →Letter Group Classification
Three letter-groups share a gap pattern — spot the one that breaks it.
हिंदी में पढ़ें →Alphanumeric Series
A letter pattern and a number pattern, running side by side.
हिंदी में पढ़ें →Syllogism: Possibility Cases
"Possible" needs just one valid diagram, not every diagram.
हिंदी में पढ़ें →Scheduling Puzzle: Month and Date
Two attributes to track at once — sort every clue into its own track.
हिंदी में पढ़ें →Letter Pairs with Equal Alphabet Gap
Does the word-gap between two letters match their alphabet-gap?
हिंदी में पढ़ें →Circular Seating Arrangement
No "ends" on a circle — every clue is relative, and left/right flips.
हिंदी में पढ़ें →Matrix Puzzle
Two attributes, one group of people — the grids lock together clue by clue.
हिंदी में पढ़ें →Seating Arrangement (Mixed Directions)
When someone faces South, their own right and left flip relative to the row.
हिंदी में पढ़ें →Floor and Flat Puzzle
A floor puzzle with a second axis — everyone needs a floor AND a flat.
हिंदी में पढ़ें →English
Spotting Errors
A handful of recurring grammar rules, not obscure trivia.
हिंदी में पढ़ें →Synonyms and Antonyms
Why context, not vocabulary size, is usually what decides the answer.
हिंदी में पढ़ें →One Word Substitution
Build substitution vocabulary with examples and practice.
हिंदी में पढ़ें →Sentence Improvement
The same grammar rules as Spotting Errors, in a pick-the-fix format.
हिंदी में पढ़ें →Active and Passive Voice
A mechanical three-step transformation, applied consistently across tenses.
हिंदी में पढ़ें →Direct and Indirect Speech
Tense shifts, pronoun changes, and how questions convert differently.
हिंदी में पढ़ें →Para Jumbles
Following the pronoun and connector chain to the one order that works.
हिंदी में पढ़ें →Cloze Test
Grammar plus meaning — reading the whole passage before picking an answer.
हिंदी में पढ़ें →Degrees of Comparison
Matching an adjective’s form to how many things are being compared.
हिंदी में पढ़ें →Prepositions
Fixed pairings to learn like vocabulary, plus a size-based pattern for time and place.
हिंदी में पढ़ें →Idioms and Phrases
Pure recognition — fixed phrases that can’t be worked out from their words.
हिंदी में पढ़ें →Articles
"A"/"an" vs "the" — specific and identified, or just any one example?
हिंदी में पढ़ें →Homophones
Words that sound identical — spelling and meaning are the only tell.
हिंदी में पढ़ें →Phrasal Verbs
Learned the same way as idioms — one verb-plus-particle combination at a time.
हिंदी में पढ़ें →Spelling Correction
The correct spelling of one intended word, not a choice between different words.
हिंदी में पढ़ें →Tag Questions
One flip rule — positive statement, negative tag — plus matching the auxiliary verb.
हिंदी में पढ़ें →Fill in the Blanks
Reading the whole sentence for the fixed collocation the blank is testing.
हिंदी में पढ़ें →Para Completion
Continuing a paragraph’s direction without overreaching or contradicting it.
हिंदी में पढ़ें →Commonly Confused Words
Affect vs effect, principal vs principle — learned by meaning, not spelling.
हिंदी में पढ़ें →Reading Comprehension
Every answer comes from the passage itself, not outside knowledge.
हिंदी में पढ़ें →Sentence Rearrangement
Reassembling one sentence’s fragments, not a paragraph’s sentences.
हिंदी में पढ़ें →Punctuation
Fixed, learnable rules for commas, apostrophes, and semicolons.
हिंदी में पढ़ें →Collective Nouns
A pride of lions, a pack of wolves — fixed terms, learned like vocabulary.
हिंदी में पढ़ें →Determiners
Much vs many, few vs a few — countable, uncountable, positive, negative.
हिंदी में पढ़ें →Sentence Transformation
Simple, compound, or complex — same meaning, different structure.
हिंदी में पढ़ें →Subject-Verb Agreement
Finding the true subject, even when a phrase gets in the way.
हिंदी में पढ़ें →Infinitives and Gerunds
A short, fixed list of verbs to learn — enjoy reading, decide to accept.
हिंदी में पढ़ें →Redundancy
"Repeat again," "free gift" — spotting words that say the same thing twice.
हिंदी में पढ़ें →Modal Verbs
"Must not" vs "need not" — a classic trap between prohibition and no obligation.
हिंदी में पढ़ें →Tenses
Present Perfect vs Simple Past, and "since" vs "for" — the two recurring traps.
हिंदी में पढ़ें →Relative Pronouns
Who vs whom, which vs that — subject, object, person, or thing.
हिंदी में पढ़ें →Conditional Sentences
Four "if" patterns, each tied to a different degree of reality.
हिंदी में पढ़ें →Confusable Verbs
Lay vs lie, rise vs raise — does the sentence have a direct object?
हिंदी में पढ़ें →Passive Voice: Questions and Negatives
The auxiliary verb moves to a new position, not just the subject.
हिंदी में पढ़ें →Connectors and Conjunctions
Same idea, different connector — but each needs a clause or just a noun.
हिंदी में पढ़ें →Correlative Conjunctions
Either...or, neither...nor — fixed pairs, never mixed or broken.
हिंदी में पढ़ें →Countable and Uncountable Nouns
"Much" or "many"? It depends whether the noun has a plural at all.
हिंदी में पढ़ें →Prefixes and Suffixes
A prefix usually flips the meaning; a suffix usually changes the part of speech.
हिंदी में पढ़ें →Clauses (Noun, Adjective, Adverb)
Every clause has a subject and verb — the question is what job it’s doing.
हिंदी में पढ़ें →General Awareness
Ancient and Medieval Indian History
Key facts, a one-glance revision list and practice questions on Ancient and Medieval Indian History.
हिंदी में पढ़ें →Modern Indian History and the Freedom Struggle
Key facts, a one-glance revision list and practice questions on Modern Indian History and the Freedom Struggle.
हिंदी में पढ़ें →Indian Art and Culture
Key facts, a one-glance revision list and practice questions on Indian Art and Culture.
हिंदी में पढ़ें →Indian Geography: Physical, Economic and Human
Key facts, a one-glance revision list and practice questions on Indian Geography: Physical, Economic and Human.
हिंदी में पढ़ें →Physical and World Geography
Key facts, a one-glance revision list and practice questions on Physical and World Geography.
हिंदी में पढ़ें →Indian Polity and Constitution
Key facts, a one-glance revision list and practice questions on Indian Polity and Constitution.
हिंदी में पढ़ें →Indian Economy
Key facts, a one-glance revision list and practice questions on Indian Economy.
हिंदी में पढ़ें →General Science (Physics, Chemistry, Biology)
Key facts, a one-glance revision list and practice questions on General Science (Physics, Chemistry, Biology).
हिंदी में पढ़ें →Environment and Ecology
Key facts, a one-glance revision list and practice questions on Environment and Ecology.
हिंदी में पढ़ें →Static General Knowledge: Symbols, Firsts, Awards, Sports and Organisations
Key facts, a one-glance revision list and practice questions on Static General Knowledge: Symbols, Firsts, Awards, Sports and Organisations.
हिंदी में पढ़ें →State GK
Uttar Pradesh General Knowledge
Key facts, a one-glance revision list and practice questions on Uttar Pradesh General Knowledge.
हिंदी में पढ़ें →Bihar General Knowledge
Key facts, a one-glance revision list and practice questions on Bihar General Knowledge.
हिंदी में पढ़ें →Madhya Pradesh General Knowledge
Key facts, a one-glance revision list and practice questions on Madhya Pradesh General Knowledge.
हिंदी में पढ़ें →Rajasthan General Knowledge
Key facts, a one-glance revision list and practice questions on Rajasthan General Knowledge.
हिंदी में पढ़ें →Haryana General Knowledge
Key facts, a one-glance revision list and practice questions on Haryana General Knowledge.
हिंदी में पढ़ें →Teaching (CTET)
Child Development and Pedagogy
Key facts, a one-glance revision list and practice questions on Child Development and Pedagogy.
हिंदी में पढ़ें →Inclusive Education and Children with Special Needs
Key facts, a one-glance revision list and practice questions on Inclusive Education and Children with Special Needs.
हिंदी में पढ़ें →Language Pedagogy (Language I and Language II)
Key facts, a one-glance revision list and practice questions on Language Pedagogy (Language I and Language II).
हिंदी में पढ़ें →Mathematics Pedagogy
Key facts, a one-glance revision list and practice questions on Mathematics Pedagogy.
हिंदी में पढ़ें →Environmental Studies (EVS) and its Pedagogy (Paper I)
Key facts, a one-glance revision list and practice questions on Environmental Studies (EVS) and its Pedagogy (Paper I).
हिंदी में पढ़ें →Social Studies and its Pedagogy (Paper II)
Key facts, a one-glance revision list and practice questions on Social Studies and its Pedagogy (Paper II).
हिंदी में पढ़ें →Science and its Pedagogy (Paper II)
Key facts, a one-glance revision list and practice questions on Science and its Pedagogy (Paper II).
हिंदी में पढ़ें →Mathematics, Classes I-V (Paper I)
Key facts, a one-glance revision list and practice questions on Mathematics, Classes I-V (Paper I).
हिंदी में पढ़ें →Mathematics, Classes VI-VIII (Paper II)
Key facts, a one-glance revision list and practice questions on Mathematics, Classes VI-VIII (Paper II).
हिंदी में पढ़ें →More lessons
Banking and Financial Awareness
Ten lessons on Indian banking for IBPS, SBI and other bank exams: the RBI and monetary policy, accounts and payment systems, NPAs and Basel norms, financial inclusion, regulators and markets.
हिंदी में पढ़ें →Computer Knowledge
Ten lessons on computer awareness for bank, SSC and state exams: fundamentals, hardware and memory, software and operating systems, number systems, MS Office, networks and the internet, cyber security and databases.
हिंदी में पढ़ें →Beyond the Written Exam: Descriptive Paper, Interview and Other Stages
Eleven lessons on the stages some recruitments add after the objective test: the descriptive English paper, the interview, the group exercise, the psychometric test, the physical tests and the local language test. Your exam’s own notification says which of these stages it has.
हिंदी में पढ़ें →General Hindi (lessons in Hindi)
41 lessons in Hindi for exams with a General Hindi paper: grammar, idioms and proverbs, one-word substitution, unseen passages, sentence and spelling correction, synonyms and antonyms, and word choice.