Answer:
5, -25, etc
Step-by-step explanation:
It involves multiplying to get each answer, so it is geometric
5, -25, 125, -625,...
In order to test if something is geometric, just divide each element by the previous element. It is geometric if the number is always the same.
-25/5=-5
125/-25=-5
-625/125=-5
The other options do not fall into this pattern.
option b
180 students
taking common
The answer is B that is the answer