Question

find two rational and two irrational number between 0.5 and .55

Answer 1

Rational number
0.512
0.59
Irrational number
0.512122122212222....
0.542422422242222......

Answer 2

(i)0.512512512...                                                           rational  
(ii)0.542542...                                                                rational
(a)0.51235648974521354265565486...                      irrational
(b)0.542216876535641321564...                                irrational