from a total of 5 boys and 6 girls , how many 4 - person committees can be selected if the committee must have exactly 2 boys and 2 girls ?
n0 = 5.0
n1 = 6.0
n2 = 4.0
n3 = 2.0
n4 = 2.0
t0 = n0 * 3.0
t1 = n0 * n3
answer = t0 * t1
print(answer)