When a yavam gives a get to his yevamah (with no prior ma'amar), what is the result?
Halachah 1: A get disqualifies the yevamah from yibbum by Rabbinic decree, but she is not permitted to marry another man until she actually performs chalitzah.
Question 2
What makes a ma'amar 'acceptable' according to Halachah 6?
Halachah 6: An acceptable ma'amar is one given at the outset, uncontaminated by any prior or subsequent get, chalitzah, competing ma'amar, or relations.
Question 3
What is the legal consequence when two yevamim each perform yibbum with two different yevamot from the same household and the order cannot be determined?
Halachah 17: Both yevamim must give gittin, and the women are permitted to marry other men but forbidden to the yevamim.
Question 4
What is the legal status of a get or chalitzah performed by a minor yavam who is over nine years old?
Halachah 18: A get or chalitzah performed by a minor yavam is always legally inconsequential.
Question 5
If the deceased was married to a mentally competent woman and a deaf-mute, and the yavam performs acceptable yibbum with the competent woman first, what is the status of the deaf-mute?
Halachah 25: Yibbum with the Scripturally-bound wife releases all Rabbinically-bound wives.