Q. In Erlang's analysis of efficient telephone line usage he derived the formulae for two important cases, ________, (Solved)
1. erlang-b
2. erlang-c
3. erlang-a
4. both 1 and 2
- d. both 1 and 2
1. erlang-b
2. erlang-c
3. erlang-a
4. both 1 and 2