Question

prove that n(a union b)= n(a) +n(b) - n(a intersecton b ) with an example​

Answer 1

Step-by-step explanation:

Stone ______, and so the tools of long ago have remained when even the bones of the men who made them _______ without trace. (a) didn’t decay / disappeared (b) wouldn’t decay / disappear (c) doesn’t decay / have disappeared (d) won’t decay / has disappeared