Question

If P(A) :P(A-) =3:5,then p(A) =________. A. 3/5.B.5/3 C. 5/8 D. 3/8

Answer 1

Answer:

P(A)' : P(A) = 5/3

adding both sides 1, we get

{ P(A)' + P(A) } ÷ P(A) = (5+3) ÷ 3

1 ÷ P(A) = 8 ÷ 3

so P(A) = 3 / 8

$\frac{3}{8}$