diff --git a/is/UB1/ISUB1.pdf b/is/UB1/ISUB1.pdf
index 52abefc..a7117b9 100644
--- a/is/UB1/ISUB1.pdf
+++ b/is/UB1/ISUB1.pdf
Binary files differ
diff --git a/is/UB1/ISUB1.tex b/is/UB1/ISUB1.tex
index 59bd46b..e0a6a4c 100644
--- a/is/UB1/ISUB1.tex
+++ b/is/UB1/ISUB1.tex
@@ -69,12 +69,7 @@
 %Kommando für Aufgaben
 %\Aufgabe{AufgTitel}{Punktezahl}
 \newcommand{\Aufgabe}[2]{\stepcounter{n}
-\ifnum\value{n}>1
-\newline
-\else
-\fi
-
-\indent\textbf{Exercise \arabic{n}: #1} (#2 Punkte)\\}
+    \indent\textbf{Exercise \arabic{n}: #1} (#2 Punkte)\\}
 
 
 
@@ -85,7 +80,7 @@
     }{SS 15}{4}
     \vspace{1cm}
     \Aufgabe{Python}{4}
-        done
+        done\\
     \Aufgabe{Poker}{2+2+4=8}
         \begin{enumerate}[1.]
             \item possible hands: ${52 \choose 5}=2598960$\\
@@ -102,6 +97,17 @@
                 $P(B|A)=?$%TODO
             \end{enumerate}
         \end{enumerate}
+    \Aufgabe{Random Variables}{2+2+2=6}
+        \begin{enumerate}
+            \item $\int\limits_{\frac{1}{2}}^{\frac{3}{2}}\frac{1}{2}x dx=F\left(\frac{3}{4}\right)-F\left(\frac{1}{2}\right)=\frac{9}{16}-\frac{1}{16}=\frac{1}{2}$
+            \item $x^2<x\Leftrightarrow x\in(0,1)$\\
+            $\Rightarrow \mathds{P}(Y<X)=\mathds{P}(0<X<1)=\int\limits_{0}^{1}\frac{1}{2}x dx=F\left(1\right)-F\left(0\right)=\frac{1}{4}-0=\frac{1}{4}$
+            \item $F_Z(x)=\begin{cases}
+                0 & if\ x<0\\
+                \frac{\sqrt{2}}{2}\sqrt{x} & if\ 0\leq x\leq \sqrt2\\
+                1 & if\ x>\sqrt{2}
+            \end{cases}$
+        \end{enumerate}
 
 \end{document}