Question

which of the following rational number is in its simplest form a)3\12 B) 5/20 c) 7/5 d) 7/21​

Answer 1

Answer:

(c)7/5

As 3/12 can be divided by 3

,5/20 can be divided by 5

And 7/21 can be divided by 7.

Answer 2

as we can see in the following option 3 / 12 is not in its simplest form as three can divide 12 in the B again 5 and 20 is not in its simplest form as 5 can divide 20 in option C 7/5 there are no common factors hence this is in the simplest form that means it can not be divided any forward . now with the option D 7/ 21 again 7 can divide 21 hence that is also not in the simplest form