Question

Which pair of numbers is relatively prime?








A.
10 and 35







B.
10 and 27







C.
10 and 70







D.
10 and 48

Answer 1

I don't know what relatively prime mean

Answer 2

Two numbers are relatively prime if they have no common factors except for 1.

So, which pair do you think fits that description? @hannahekelman

Answer 3

I think its c then

Answer 4

These have 5 in common --> C. 10 and 70

Try again.

Answer 5

Two numbers are "relatively prime" if they have no common factors other than 1 (in other words you cannot evenly divide both by some common value)

Example: 7 and 20 are relatively prime (no common factor), but 6 and 20 are not relatively prime because you can divide both by 2 (2 is a common factor).

Answer 6

Go through your options:

Do these two numbers have a common factor: 10 and 35 ? @hannahekelman

Answer 7

Look at these two: 10 and 27

10 = 5*2
27 = 3*3*3

Do 10 and 27 have a common factor shown above? @hannahekelman