Question

Find the sum of the common prime factors of 168
and 315.
A. 10
B. 7
C. 3
D. 9​

Answer 1

Answer:

The sum is 10

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Answer 2

The sum of the common prime factors of $168$ and $315$ is $10$

Explanation:

Given;

Find the sum of the common prime factors of $168$ and $315$

The Prime Factor of $168=2 , 2,2,3$ and $7$

And

The Prime Factor of $315=3,3,5$ and $7$

The Common Prime Factor of $168$ and $315=3$ and $7$

∴ The sum of the common prime factors of $168$ and $315=3+7=10$

Hence, the sum of the common prime factors of and is