Quiz on בבא מציעא מ

Why didn’t Mari bar Isak get paid for the work he had done on his brother’s field?
1. He had originally declared that he was working as a favor.
2. He hadn’t worked on the field with the permission of Beis Din.
3. His brother was a Katan.
4. He hadn’t worked on the field with the permission of Beis Din, and his brother was a Katan.
5. He had originally declared that he was working as a favor, and a favor to a Katan can't be undone.
How does grain get depleted according to the Tana Kama?
1. Mice eat from it.
2. It gets scattered.
3. Some gets lost.
4. Answers A and B.
5. Answers A, B, and C.
Why did a grain-filled barrel break?
1. A panther wanted the grain, and broke it.
2. The grain was packed in the summer, and the winter’s moisture made it swell and break the barrel.
3. It was too heavy; too much grain was packed inside.
4. The workers stacked the barrels in a way that a heavy barrel on top of the pile fell on a lighter one beneath it.
5. Faulty manufacturing; the barrel wasn’t made well.
What profit did Rav Yehudah turn on the barrel of oil that he bought and sold?
1. Six zuz, which was a twelfth of his investment.
2. Six zuz and the barrel.
3. Six zuz, the barrel, and the dregs from the barrel.
4. Six zuz and the dregs from the barrel.
5. The barrel and the dregs.
Who is not called a “merchant”?
1. Someone who sells from the same price that he buys.
2. Someone who cheats his customers.
3. Someone who isn't based in a store or kiosk.
4. Answers A and B.
5. Answers A, B, and C.