What is the Highest Common Factor of 42, 168 and 210?
Answer & explanation
Correct answer: option 3
42 = 2 x 3 x 7
168 = 2 x 2 x 2 x 3 x 7
210 = 2 x 3 x 5 x 7
So, the Highest Common Factor of 42, 168 and 210 = 2 x 3 x 7 = 42
What is the Highest Common Factor of 42, 168 and 210?
Correct answer: option 3
42 = 2 x 3 x 7
168 = 2 x 2 x 2 x 3 x 7
210 = 2 x 3 x 5 x 7
So, the Highest Common Factor of 42, 168 and 210 = 2 x 3 x 7 = 42