How to find the greatest common factor of 55, 75?

zookeeper1930r8k

zookeeper1930r8k

Answered question

2023-03-22

How to find the greatest common factor of 55, 75?

Answer & Explanation

yuki1128520x2id

yuki1128520x2id

Beginner2023-03-23Added 7 answers

The prime factors of each number should be written down.
55=5.11
75=3.5.5
Now, circle the common factors of each of the numbers.
You get 5 common from both the numbers. Notice that after circling, you wont find anymore common factors so the GCF is simply 5. ( Each factor can be circled and used only once so 5 cannot be repeated even though 75 has two 5s.)

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