Ricardo y Tomás son

los menos aburre (the least boring) de la fiesta.

Mi profesor de biología es (the oldest) de la universidad.

i got part of them right. like the first one would be menos que... and would second one be el mayor?

I believe el mayor is right, but I am unsure about the first one.

son los menos aburridos

la mayor de la universidad

Sra

Good job with the first sentence! You're correct in using "menos que" to express "the least" in Spanish. The correct sentence would be:

Ricardo y Tomás son los menos aburridos (the least boring) de la fiesta.

For the second sentence, "the oldest" in Spanish can be translated as "el más viejo" or "el mayor." However, when referring to a person as "the oldest" in a hierarchical sense, you would use "el mayor." So the correct sentence would be:

Mi profesor de biología es el mayor de la universidad.

Good job! You're on the right track with both of your answers.

For the first sentence, "Ricardo y Tomás son los menos aburridos de la fiesta" (Ricardo and Tomás are the least boring of the party), you correctly identified that it requires the phrase "menos que" to convey "the least". However, instead of "menos que", we would use "los menos" to directly translate "the least".

For the second sentence, "Mi profesor de biología es el mayor de la universidad" (My biology professor is the oldest at the university), you are correct in using "el mayor" to convey "the oldest".

Keep up the good work!