Question

6 rational numbers between 0.2 and 1/2

Answer 1

0.2 can be written as 2/10
and 1/2 can be written as 5/10
6 Rational numbers between 2/10 and 5/10
2/10 x 5/5 =10/50
5/10 x 5/5 = 25/50
11/50, 12/50, 13/50, 14/50, 15/50

Answer 2

0.2< n < 0.5

n is between 0.2 and 0.5. 

some such n are,

    0.21, 0.3, 0.375, 0.38, 0.42, 0.425