If the odds against an event be $2 : 3$, then the probability of its occurrence is
$\frac{1}{5}$
$\frac{2}{5}$
$\frac{3}{5}$
$1$
(c) Required probability $ = \frac{3}{5}.$
$A$ and $B$ are events such that $P(A)=0.42$, $P(B)=0.48$ and $P(A$ and $B)=0.16 .$ Determine $P (A$ or $B).$
Events $E$ and $F$ are such that $P ( $ not $E$ not $F )=0.25,$ State whether $E$ and $F$ are mutually exclusive.
Two balls are drawn at random with replacement from a box containing $10$ black and $8$ red balls. Find the probability that both balls are red.
An event has odds in favour $4 : 5$, then the probability that event occurs, is
The chance of an event happening is the square of the chance of a second event but the odds against the first are the cube of the odds against the second. The chances of the events are
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