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Greatest Common Divisor / Lowest Common Multiple
What is the largest number that can divide two numbers without a remainder? What is the smallest number that is divisible by two numbers without a remainder?
Excel in math and science
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Concept Quizzes
What is the least common multiple of \(2\) and \(3\)?
Excel in math and science
Master concepts by solving fun, challenging problems.
It's hard to learn from lectures and videos
Learn more effectively through short, conceptual quizzes.
Our wiki is made for math and science
Master advanced concepts through explanations,
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Used and loved by 4 million people
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including olympiad champions, researchers, and professionals.
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That seems reasonable.
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by Brilliant Staff
What is the lowest common multiple of 39 and 65?
Excel in math and science
Master concepts by solving fun, challenging problems.
It's hard to learn from lectures and videos
Learn more effectively through short, conceptual quizzes.
Our wiki is made for math and science
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by Brilliant Staff
A bus stop has two bus lines: the red line and the blue line. The red line stops every \(18\) minutes, and the blue line stops every \(27\) minutes. If the buses of both lines have just simultaneously stopped at the bus stop, how many minutes later will the buses of the two lines meet at this bus stop again?
Excel in math and science
Master concepts by solving fun, challenging problems.
It's hard to learn from lectures and videos
Learn more effectively through short, conceptual quizzes.
Our wiki is made for math and science
Master advanced concepts through explanations,
examples, and problems from the community.
Used and loved by 4 million people
Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.
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That seems reasonable.
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by Brilliant Staff
If the lowest common multiple of \(3^a 5^b\) and \(3^4\) is \(3^5\), what is \(3^a 5^b ?\)
Excel in math and science
Master concepts by solving fun, challenging problems.
It's hard to learn from lectures and videos
Learn more effectively through short, conceptual quizzes.
Our wiki is made for math and science
Master advanced concepts through explanations,
examples, and problems from the community.
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That seems reasonable.
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by Brilliant Staff
What is the least common multiple of 12 and 21?
Excel in math and science
Master concepts by solving fun, challenging problems.
It's hard to learn from lectures and videos
Learn more effectively through short, conceptual quizzes.
Our wiki is made for math and science
Master advanced concepts through explanations,
examples, and problems from the community.
Used and loved by 4 million people
Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.
Your answer seems reasonable.
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That seems reasonable.
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by Brilliant Staff