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Math newspaper for primary school students in the second volume of grade four
(1) The number of users in the first and third categories is:

(49×2-8)÷2

=90÷2

=45 (person)

The number of users in the fifth category is:

49- 13=36 (person)

The number of users in Level 4 is:

(45+36)-39=42 (person)

A: The number of subscribers in each class is: Class One, Class Two, Class Three, Class Four and Class Five.

(2) Number of users of each category, disconnection statistics are as follows: