35 students like physics in a class of 50 students, 30 like Maths and 3 do not like anyone of them. How many students like only Physics?
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Correct Answer: Option D
Explanation:
Using the quick and short formula
\begin{aligned}
&S_{12}=\left(S_1+S_2+S_0\right)-U \\
&S_{12}=(35+303)-50=18 \\
&S_1=35-18=17 \cdot \quad \text { }
\end{aligned}
Using the quick and short formula
\begin{aligned}
&S_{12}=\left(S_1+S_2+S_0\right)-U \\
&S_{12}=(35+303)-50=18 \\
&S_1=35-18=17 \cdot \quad \text { }
\end{aligned}