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To find four rational numbers between 3 and 5
Solution: As we have to find four rational numbers between 2 nos then add 4+1 in the denominator
3*5/1*5= 15/5
5*5/1*5=25/5
So we can write any four numbers between 15/5 and 25/5
16/5, 17/5, 18/5, 19/5
Problem2) To find five rational numbers between 5/7 and 6/7
Solution: As both have the same denominator so we can divide and multiply both the numbers by 10
5*10/7*10= 50/70
6*10/7*10=60/70
Therefore five rational numbers are 51/70, 52/70, 53/70, 54/70, 55/70