GNFS Aptitude Test study plan

Diagnose baseline accuracy and speed on the four core numerical question types: percentages, ratios and proportions, averages, and rate/work problems

Drill percentage change, successive percentage change, and reverse-percentage problems until each is solved without written setup

Build a personal error log that records the operation, not just the topic, behind every missed item

Practice mental arithmetic for two-digit multiplication, fraction-to-decimal conversion, and squaring numbers ending in 5

Solve ratio, proportion, and mixture problems by setting up a single equation rather than trial substitution

Compute averages, weighted averages, and combined-group averages using the deviation method

Apply the work-rate and pipes-and-cistern shortcut formulas to at least 20 timed items

Reduce average time per numerical item by 15% versus the week 1 diagnostic while holding accuracy above 70%

Handle number series, letter series, and odd-one-out items by testing difference, ratio, and alternating-pattern hypotheses in a fixed order

Draw valid conclusions from syllogistic premises using Venn diagrams and the 'some/all/no' rules

Translate each logic puzzle into a compact symbolic notation before solving

Complete a 40-minute mixed numerical-and-logic set without skipping any item

Identify the main conclusion and the supporting premise in short passages within 60 seconds

Separate assumption, inference, and strengthen/weaken question stems and apply the correct test to each

Solve seating-arrangement and blood-relation puzzles by drawing the constraint diagram first

Eliminate answer choices on verbal items using scope, extreme-language, and relevance filters

Complete sentence-completion and synonym/antonym items by predicting the answer before reading the options

Proofread strings of numbers, codes, and names and flag every mismatch within a fixed time limit

Apply a two-pass checking routine to date, unit, and sign errors in worked problems

Compare two versions of a short report and list every discrepancy without rereading the whole text

Rank decision scenarios by urgency and impact and justify each ranking in one sentence

Identify the assumption behind a proposed course of action and state what evidence would overturn it

Audit a spreadsheet-style table for duplicated rows, misplaced decimals, and inconsistent units

Practice choosing the least-bad option when no answer is fully satisfactory, and record the trade-off

Read tables, bar charts, and line graphs and extract the requested value without computing everything

Compute percentage share, growth rate, and ratio comparisons from a data set under time pressure

Spot misleading axes, truncated scales, and mismatched units in presented data

Revisit the week 1 error log and re-solve every logged numerical item correctly

Take two full-length timed mock tests under exam conditions and score each by domain

Re-drill only the two weakest domains identified by the mock results

Rehearse a per-section time budget and a skip-and-return rule for stubborn items

Confirm that the final error log contains no unresolved item from any week