Question

give five rational numbers lying between 3/5 and 4/5.insert six rational numbers between 3 and4

Answer 1

3/5*6/6=18/30
4/5*6/6=24/30
 rational numbers between 18/24 and 24/30 are 19/30,20/30,21/30,22/30,23/30.
3*7=21/7
4*7=28/7
rational numbers between 21/7 and 28/7 are 22/7,23/7,24/7,25/7,26/7,27/7.

Answer 2

for that first take the LCM of the denominators that here it would be 5 mow multiply both the numerator and the denominator with a higher no. say here 5 so you will get 15/25 and 20/25 and now take any no. lying between 15/25 and 20/25 ie 16/25,17/25,18/25,19/25.