If there are two houses between two Chatzeros, and each Chatzer passed through 'its' house and put their Eruv in the other house, are the Eruvin valid?

1.   ?    Yes.
2.   ?    No, each house is considered a Beis Sha'ar.
3.   ?    No, the people of the Chatzer must pass through a house that did not Me'arev to get to their Eruv.
4.   ?    Machlokes A&B.
5.   ?    B or C.

** Hadran Alach, 'ha'Dar'! **

1.   ?    TRUE!!!!

Lavud applies if the space is less then _____ .

1.   ?    3
2.   ?    4
3.   ?    5
4.   ?    6
5.   ?    Machlokes A&B.

Is a window which is mostly above ten Tefachim still valid?

1.   ?    Yes.
2.   ?    No.
3.   ?    Only if it is see through.
4.   ?    Only if it is wider than 4.
5.   ?    Machlokes A&B.

How many times more is the circumference of a circle than its diameter?

1.   ?    2
2.   ?    3
3.   ?    4
4.   ?    5
5.   ?    Machlokes B&C.

Does a skylight in the middle of the ceiling, requires a fixed ladder in order to be part of the Chatzer?

1.   ?    Yes.
2.   ?    No, but it needs a temporary one.
3.   ?    No, it needs nothing.
4.   ?    Machlokes A&C.
5.   ?    Machlokes B&C.