Greatest Common Divisor

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Find the *Greatest Common Divisor* (GCD) of the numbers 30 and 7560.

**Answer**

$30=(2)(3)(5)$

$7560=({2}^{3})({3}^{3})(5)(7)$

The GCD of 30 and 7560 is the product of the least powers of each prime factor in both.

Thus the GCD of 30 and 7560

$=(2)(3)(5)$

$=30$