Question

Let F, G, and H be the sets, and suppose n(F x G)=60, n(G x H)=20, and n(F x H)=48

n(F x G x H)=

Answer 1

n(F) = 12
n(G) = 5
n(H) = 4

seem to work

n(F x G x H) = 12*5*4