Seven: 53,59,61,67,71,73,79.
prime numbers between 50 and 80 = 53,59,61,67 ,71,73,79
3 71,73 and 79
83 89 97.
Two: 83 and 89.
50
Prime numbers between 71 to 80 = 73 and 79 Therefore there are 2 prime numbers between 71 to 80.
100 and 80
Twenty of them including 80 and 100
80
Two.
3: 71, 73, and 79
Seven: 53,59,61,67,71,73,79.
80
5
80
prime numbers between 50 and 80 = 53,59,61,67 ,71,73,79