The probabilities that the independent events $A$, $B$, and $C$ will occur are: $\frac34$, $\frac12$, and $\frac14$.
What is the probability that at least one of the three events will happen?
My solution is
$1-$ Pr(intersection of the complements of $A$, $B$, $C$) thus $1-(\frac14\times\frac12\times\frac34)$