PrepTest 66, Section 1, Question 1
A chemistry class has six lab sessions scheduled over three days�Wednesday, Thursday, and Friday�one session being held each morning and one each afternoon. Each session will be led by a different lab assistant�Julio, Kevin, Lan, Nessa, Olivia, or Rebecca. The assignment of lab assistants to sessions is constrained as follows:
A chemistry class has six lab sessions scheduled over three days�Wednesday, Thursday, and Friday�one session being held each morning and one each afternoon. Each session will be led by a different lab assistant�Julio, Kevin, Lan, Nessa, Olivia, or Rebecca. The assignment of lab assistants to sessions is constrained as follows:
A chemistry class has six lab sessions scheduled over three days�Wednesday, Thursday, and Friday�one session being held each morning and one each afternoon. Each session will be led by a different lab assistant�Julio, Kevin, Lan, Nessa, Olivia, or Rebecca. The assignment of lab assistants to sessions is constrained as follows:
A chemistry class has six lab sessions scheduled over three days�Wednesday, Thursday, and Friday�one session being held each morning and one each afternoon. Each session will be led by a different lab assistant�Julio, Kevin, Lan, Nessa, Olivia, or Rebecca. The assignment of lab assistants to sessions is constrained as follows:
Kevin and Rebecca must lead sessions that meet on the same day.
Lan and Olivia cannot lead sessions that meet on the same day.
Nessa must lead an afternoon session.
Julio's session must meet on an earlier day of the week than Olivia's.
Which one of the following could be an accurate assignment of lab assistants to morning and afternoon sessions, respectively, on the three days?
Wednesday: Rebecca, Kevin
Thursday: Julio, Lan
Friday: Nessa, Olivia
Wednesday: Olivia, Nessa
Thursday: Julio, Lan
Friday: Kevin, Rebecca
Wednesday: Lan, Kevin
Thursday: Rebecca, Julio
Friday: Olivia, Nessa
Wednesday: Kevin, Rebecca
Thursday: Julio, Nessa
Friday: Olivia, Lan
Wednesday: Julio, Lan
Thursday: Olivia, Nessa
Friday: Rebecca, Kevin
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