HCF of 28, 70 & 91 by prime factorization
AS SOON AS POSSIBLE!
Answers
Answered by
0
Answer:The hcf of 28 and 70 can be obtained like this:
The factors of 28 are 28, 14, 7, 4, 2, 1.
The factors of 70 are 70, 35, 14, 10, 7, 5, 2, 1.
The common factors of 28 and 70 are 14, 7, 2, 1, intersecting the two sets above.
In the intersection factors of 28 ∩ factors of 70 the greatest element is 14.
Therefore, the greatest common factor of 28 and 70 is 14.
Answered by
1
91 = 13*7
70 = 7*5*2
28 = 7 * 2 *2
hcf is product of smallest power of all common factor
from here 7 is hcf because it is common in all
Similar questions