Number Theory
# Greatest Common Divisor / Lowest Common Multiple

What is the lowest common multiple of 7 and 11?

When the GCD of 2048 and 3072 is 1024, what is the LCM of 2048 and 3072?

\(A\) and \(B\) are positive integers such that

\[ A B=540, \quad \text{lcm}(A, B)=90.\]

What is \(\gcd(A, B)?\)

If the GCD of \(A\) and \(B\) is \(7,\) the LCM is \(63,\) and \(A>B,\) what is the value of \(B?\)

What is the lowest common multiple of 4 and 9?

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