The sample space for an experiment contains five sample points. The probabilities of the sample points are:

$P(1)=P(2)=0.1$
$P(3)=P(4)=0.15$
$P(5)=0.5$

Find the probability of each of the following events:

$A: \ \{$ Either 1 or 5 occurs $\}$
$B: \ \{$ Either 1, 4, or 3 occurs $\}$
$C: \ \{$ 2 does not occur $\}$

$P(A)=$
$P(B)=$
$P(C)=$