If two people measured and obtained different Techumim we follow the larger one.

1.   ?    True.
2.   ?    False.
3.   ?    We listen to the bigggest expert.
4.   ?    We assume the bigger up until אלכסונא . More we assume is an error.
5.   ?    We assume the bigger up until inexpert use of the rope . More we assume is an error.

If a public city became an individual city may we be Me'arev it .

1.   ?    Yes, like normal.
2.   ?    No.
3.   ?    Yes,we leave outside the Eruv the size of the city 'Chadashah' of Yehudah, 50 residents.
4.   ?    One must leave over three Chatzeros, each with at least two houses.
5.   ?    Machlokes C&D.

May an Ir shel Rabim that was always an Ir shel Rabim combine the whole town in one Eruv?

1.   ?    Yes.
2.   ?    No.
3.   ?    Only if there is only one entrance to the town.
4.   ?    Machlokes A&B.
5.   ?    Machlokes B&C.

If an individual's city became a public city we may Me'arev all of it.

1.   ?    True, with a Lechi on one side.
2.   ?    True, with a Lechi or Koreh on both sides.
3.   ?    Needs at least one Tzuras ha'Pesach.
4.   ?    Both must be Tzuras ha'Pesach.
5.   ?    False.

עיר של יחיד ונעשית של רבים can one make only half the city an Eruv?

1.   ?    Yes.
2.   ?    No.
3.   ?    Only split widthwise
4.   ?    Only split lengthwise.
5.   ?    Machlokes B&C.

If there is a ladder at one end and it is open at the other end may we make an Eruv?

1.   ?    Yes.
2.   ?    No.
3.   ?    Only if it is wood.
4.   ?    Safek.
5.   ?    Machlokes A&B.