Practice Vault

Every formula on this site collected by module, in one printable reference.

Fifty fully worked problems spanning counting, Bayes, distributions and the CLT.

Assumes: The Central Limit Theorem

Fifty worked problems on rank, eigenvalues, decompositions and least squares.

Assumes: Singular Value Decomposition

Fifty worked problems on estimation, confidence intervals and every standard hypothesis test.

Assumes: F-Test and ANOVA

Numeric problems on regression, trees, SVM, clustering, PCA and evaluation metrics.

Assumes: Model Interpretability

Backpropagation by hand, convolution arithmetic, parameter counts and attention computations.

Assumes: Backpropagation: A Complete Numeric Example

A full-length timed paper matching the GATE DA pattern, with detailed solutions.

Assumes: Solved Problems: Machine Learning

A second full-length paper weighted towards algorithms, databases and classical AI.

Assumes: GATE DA Mock Set 1

The questions that actually get asked, with answers that demonstrate depth rather than recall.

Assumes: Pipelines and Data Leakage

Architecture, fine-tuning, retrieval and evaluation questions for LLM engineering roles.

Assumes: RAG in Production

Condensed one-page summaries for every module, built for the night before an exam.