Hey guys can you show me the right direction?

I need the program to add,multiply,find the average, the lowest numbers and the highest numbers all in the float functions, but I can't seem to do it, maybe the teacher post the wrong one? Anyway can you guys show me what direction to go, no need to write the codCode:#include "stdio.h" #include "math.h" float falsepositives(float accuracy, float incidence, float population) { return population*(1-incidence)*(1-(accuracy/100)); } void a2question1() { float a,i,f; int p; printf("Enter population size: "); scanf("%d",&p); printf("Enter the accuracy of the test as a percentage (e.g. 99): "); scanf("%f",&a); printf("Enter incidence of the disease as a decimal fraction (e.g. .0001): "); scanf("%f",&i); f = falsepositives(a,i,p); printf("Population = %d, accuracy = %.2f, incidence = %f,\nfalse positives = %.f\n\n",p,a,i,f); } float threenumbers(float num1, float num2, float num3) { num1=num1+num2+num3; num2=num1+num2+num3)/3; num3=num1*num2*num3; return num1,num2,num3; } void a2question2() { float a,b,c,s,avg,prod; printf("Enter a whole number: "); scanf("%f",&a); printf("enter a second whole number: "); scanf("%f",&b); printf("Enter a third whole number: "); scanf("%f",&c); s = threenumbers(a,b,c); avg = threenumbers(a,b,c); prod = threenumbers(a,b,c); printf("Sum = %f\nAverage = %f\nProduct = %f\n\n",s,avg,prod); } int main() { a2question1(); a2question1(); a2question1(); a2question2(); a2question2(); a2question2(); return 0; }