Find the GCD for the given numbers by an appropriate method.
-60 and 90
A)10
B)30
C)15
D)6

Question

Quizplus · Accepted Answer

The greatest common divisor (GCD) of 60 and 90 can be found by listing the factors of each number and choosing the largest factor they have in common. The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, and the factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90. The largest factor they have in common is 30, making it the GCD.

Find the GCD for the Given Numbers by an Appropriate