Question: What is the highest common factor of 4 and 8?
(1) 2
(2) 4
(3) 3
(4) 1
Solution:
Write the prime factorisation for each number.
4 = 2 * 2
8 = 2 * 2 * 2
Next, find the common factors shared by both of the numbers.
4 = 2 * 2
8 = 2 * 2 * 2
Finally, multiply the common factors to find the highest common factor.
2 * 2 = 4
The highest common factor of 4 and 8 is 4.
Then the option is (2) 4
Practice makes perfect. We recommend you to practice topic-wise tests https://rankmadeeasy.com/courses-and-test-series . Our expert team has prepared these tests to help you become confident in each topic.
Our Social Media Presence –
https://youtube.com/@rankmadeeasy
https://www.facebook.com/groups/rankmadeeasy
https://www.facebook.com/RankMadeEasy
https://www.instagram.com/rankmadeeasy1
https://twitter.com/rankmadeeasy