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What is the greatest common factor of 64 and 18

576

4

2

64

User Gil Birman
by
8.4k points

2 Answers

4 votes
Let's start by finding all the factors of 64 and 18.

64 / 2 = 32
32 / 2 = 16
16 / 2 = 8
8 / 2 = 4
4 / 2 = 2

This means:
64 = 2 * 2 * 2 * 2 * 2 * 2 = 2^6


18 / 2 = 9
9 / 3 = 3

This means:
18 = 2 * 3 * 3


The only factor that they both have in common is 2, so 2 is the GCF.
User Wax Cage
by
7.2k points
7 votes
The answer would be C) 2 since 2 can go into both 64 and 18 by multiplication and division.
User Beowulf
by
7.7k points

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