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General Knowledge App's Tests

General Knowledge e-Book's MCQs - Complete

Cotton Gin App (MCQ) & e-Book PDF Download - 806


Screw was invented in 3rd century B.C by

  1. Archimedes
  2. Magellan
  3. Alexander
  4. Franklin

General Knowledge App & e-Book Tests PDF Download

Cotton Gin Textbook App: Free Download (iOS & Android)

The App: Cotton Gin MCQ App to study Cotton Gin Textbook, General Knowledge MCQ App, and Basic Business Research MCQ App. The "Cotton Gin" App to free download Android & iOS Apps includes complete analytics with interactive assessments. Download App Store & Play Store learning Apps & enjoy 100% functionality with subscriptions!

Cotton Gin App (Android & iOS)

Cotton Gin App (Android & iOS)

General Knowledge App (Android & iOS)

General Knowledge App (iOS & Android)

Basic Business Research App (Android & iOS)

Basic Business Research App (Android & iOS)

Inventions App (Android & iOS)

Inventions App (iOS & Android)