Question

Which is not a common factor for 150 and 450?

25
30
45
75

Answer 1

45. This is because 150/45 is 3.33

Answer 2

if any of you want to confirm go ahead :)

Answer 3

45 as 150 is not divisible by 45. it leaves a remainder 15

Answer 4

ok thank you :)

Answer 5

It is essentially asking with # does not go evenly into both 150 and 450. A common factor to both 150 and 450 will be a number that goes evenly into both. 45 does not! If that helps.