Question

If p(A)=3/4 n(A)=39find n(S)​

Answer 1

Answer:

Refer to the attachment

Answer 2

$p(A)= \frac{3}{4} \: \\ \\ p(A)= \frac{n(A)}{n(S)} \\ \\ \frac{3}{4} = \frac{39}{n(S)} \\ \\ n(S) = \frac{39 \times 4}{3} \\ \\ n(S) = \frac{156}{3} \\ \\ n(S) = 52$