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Divisibility
You can divide 6 into equal parts of 1, 2, 3, or 6 (but not 4 or 5) because 6 is divisible by these numbers. The rules of divisibility have wide-ranging applications as an easy test for divisibility.
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Concept Quizzes
Is 12345 divisible by 5?
Note: 12345 is divisible by 5 if it can be divided into groups of 5 with nothing left over.
Excel in math and science
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Our wiki is made for math and science
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by Brilliant Staff
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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A number that consists entirely of 1s (like 1, 11, 111, etc.) is called a repunit. How many digits long is the smallest repunit that is divisible by 9?
Excel in math and science
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For how many different values of \(A\) is \(27A4\) (a four digit number where the third digit is \(A\)) divisible by 6?
Excel in math and science
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For how many different values of \(A\) is the three digit number \(3A6\) even?
Note: \(A\) can be any of the 10 digits from 0 to 9.
Excel in math and science
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Our wiki is made for math and science
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by Brilliant Staff