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Divisibility Rules
Summary
The content provides an in-depth exploration of divisibility rules, crucial for mastering basic arithmetic operations and enhancing problem-solving skills for the GRE exam.
- Divisibility rules simplify the process of determining whether a number is divisible by another without performing the actual division.
- Key rules include divisibility by 2 (even numbers), 5 (ending in 0 or 5), 4 (last two digits form a number divisible by 4), 3 and 9 (sum of digits divisible by 3 or 9), and 6 (even numbers that are also divisible by 3).
- Understanding and applying these rules can significantly speed up calculations and improve accuracy on the GRE.
- Practical examples are provided to illustrate how each divisibility rule is applied, reinforcing the learning process.
- The content emphasizes the importance of familiarity with basic times tables and arithmetic operations as foundational skills for utilizing divisibility rules effectively.
Chapters
00:01
Introduction to Divisibility Rules
01:04
Divisibility by 2 and 5
03:11
Divisibility by 3 and 9
02:27
Divisibility by 4 and 6
