FTCE General Knowledge Math Practice Test

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Prepare for the FTCE General Knowledge Math Test with our comprehensive quiz. Study using flashcards and multiple-choice questions, all with detailed hints and explanations. Get ready to excel on your exam!

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What is the least common multiple (LCM) of two numbers?

  1. The largest divisor shared by both numbers

  2. The sum of both numbers

  3. The smallest product that is a multiple of both numbers

  4. The average of both numbers

The correct answer is: The smallest product that is a multiple of both numbers

The least common multiple (LCM) of two numbers is defined as the smallest positive integer that is a multiple of both numbers. Choosing the smallest product that is a multiple of both reflects this definition accurately. For example, if we consider the numbers 4 and 5, their multiples are 4, 8, 12, 16, 20, and 5, 10, 15, 20. The smallest number that appears in both sequences is 20, confirming that the LCM is indeed 20. Therefore, this option rightly captures the concept of LCM by identifying it as the smallest shared multiple of the two numbers involved.

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