Bunuel wrote:
Baten80 wrote:
How many positive factors do 180 and 96 have in common?
A. 6
B. 12
C. 16
D. 18
E. 24
A. 6
B. 12
C. 16
D. 18
E. 24
To find the number of common factors of two integers:
1. Find thegreatest common divisor (GCD) of the two integers;
2. Find the number of factors of that GCD.
GCD of 180 and 96 is 12 = 2^2*3. The number of factors of 12 is (2 + 1)(1 + 1) = 6.
Answer:A.
I did in the exact same way. Finding out the GCD and finding the number of factors for GCD. hence A
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