Flashcard 16 - Quantitative Reasoning Flashcard Set for the CLT

Identify conditions, eliminate options, and verify the solutions.

When solving a problem with multiple conditions, first identify each condition (e.g., divisibility by \(3\) and \(5\) for numbers under \(20\)). Then, determine the numbers that satisfy each condition. Eliminate numbers that don’t meet all conditions (such as those not divisible by both \(3\) and \(5\)). Finally, verify the remaining numbers to ensure they meet all requirements. For this problem, the only number under \(20\) that is divisible by both \(3\) and \(5\) is \(15\).