There are at least two men and two women.
At least three right-handed persons.
None of the women is right-handed.
⇒ All right-handed persons are men. Every woman has a left-handed person to her immediate right.
⇒ For this to happen, there must be three left-handed-persons and one of them should be a male.
As three persons are right-handed and those being men.
The number of women at the table = 2