Question

If n(ξ) = 54 and n(A') = 37, then find n(A)

Answer 1

Answer:

n(e) _n(a') =n(a)

54_37=17

Answer 2

Answer:

n(E) = 54 n(A') = 37

n(A) = n(E) - n(A)'

= 54-37

= 17