Which major e-commerce merger in 2019 created the world's largest digital mathematics learning platform, combining adaptive learning algorithms with over 3 million practice problems?

In the world of mathematical education, e-commerce platforms have revolutionized how students and educators access learning materials. One particular merger between major educational technology companies created a dominant force in the mathematics learning market, combining advanced algorithmic problem-solving tools with comprehensive curriculum resources. This strategic consolidation transformed the landscape of online mathematics education and created one of the largest digital mathematics learning platforms globally.

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McGraw-Hill and ALEKS Corporation
Wolfram Alpha and Chegg
MathWorks and Brilliant.org
Pearson and Khan Academy