\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
A teacher told a joke in class: "Why was the math book sad? Because it had too many problems!" The probability that a student laughs at the joke is \(70\pourcent\).
Find the probability that a student does not laugh at the joke.
\(P(\text{"Not laughing"}) =\)
\(\pourcent\)