A female cockroach can produce 80 offspring at a time. If half are female, and each female produces 80 offspring, how many cockroaches would there be in 3 generations

80 x 3 so 3 generations which is 240 cockroaches

Ok if half are female that means 40 than 80 more for each of them because they all produce 80 so 80 times 40 = 3200 your gonna do the same 2 more times because of 3 generations so 3200 times 3 = 9600 in total