Would a loudspeaker be useful for most Gallaudet students?
Rationale first then the answer.
Gallaudet is a school for the deaf in the USA. Most deaf students would not be able to accurately use or rely on information conveyed via loudspeaker.. The answer is: no.

Is Mixed martial arts totally original from Roman Colosseum games?
Rationale first then the answer.
Mixed Martial arts in the UFC takes place in an enclosed structure called The Octagon. The Roman Colosseum games were fought in enclosed arenas where combatants would fight until the last man was standing. Mixed martial arts contests are stopped when one of the combatants is incapacitated. The Roman Colosseum was performed in front of crowds that numbered in the tens of thousands. Over 56,000 people attended UFC 193.. The answer is: no.

Would a triples tandem bike support Apollo 15 crew?
Rationale first then the answer.
A tandem bike has seats for more than one rider. A triples tandem bike has three seats and can support three riders. The crew of Apollo 15 consisted of three people.. The answer is: yes.