Where do we learn the maximum height of a מבוי from?

1.   ?    היכל
2.   ?    סברא
3.   ?    סוכה
4.   ?    Machlokes A&B.
5.   ?    Machlokes A&C.

According to the Rabbanan if it is higher than 20 can it still suffice?

1.   ?    Yes, if it has קיני .
2.   ?    Yes, if it has פסקי דארזא .
3.   ?    Yes, if it is a strange color.
4.   ?    Machlokes A&B. (B admits A is good)
5.   ?    Machlokes A&C.

A קורה is partially within 20 but sticks up higher does that suffice?

1.   ?    Yes.
2.   ?    No.
3.   ?    איבעיא דלא איפשטא
4.   ?    תיקו
5.   ?    Machlokes A&B.

Sechach is partially within 20 but sticks up higher does that suffice?

1.   ?    Yes.
2.   ?    No.
3.   ?    איבעיא דלא איפשטא
4.   ?    תיקו
5.   ?    Machlokes A&B.

How many טפחים to an סוכה אמה ?

1.   ?    5
2.   ?    6,שוחקות .
3.   ?    6,עצבות .
4.   ?    Machlokes A&B.
5.   ?    Machlokes A&C.

How big a bald patch in the middle of the vineyard, where some vines died do we need in order to plant?

1.   ?    Any size.
2.   ?    Always Assur.
3.   ?    16 Amos.
4.   ?    24 Amos.
5.   ?    Machlokes C&D.