2
The composite factors of 28 are 4, 14, 28 The composite factors of 24 are 4, 6, 8, 12, 24
One.
The HCF is 4
1, 2, and 4 go evenly into both 28 and 36.
Any of their factors.
7
2
28 goes into 7 and 2, while 30 goes into 15 and 2.
The highest common factor of both number is 28
When figuring out what number goes both into 21 and 28, you should look at the factor paris. 21: 1 x 21, 3 x 7 28: 1, 28, 2 x 14, 4 x 7 7 goes into both 21 and 28.
The HCF of both numbers is 7
2, 4 ,
2 goes evenly into 4 and 28
1
Number of neutrons = Mass number - Atomic number = 54 - 24 = 30
The composite factors of 28 are 4, 14, 28 The composite factors of 24 are 4, 6, 8, 12, 24