A) \[\frac{7}{10}\]
B) \[\frac{2}{15}\]
C) \[\frac{2}{5}\]
D) \[\frac{3}{5}\]
Correct Answer: C
Solution :
\[E=\{2,\,3,\,5,\,7,\,11,\,13,\,17,\,19\}\] \[\Rightarrow \] \[n(E)=8\] \[S=\{1,\,2,\,3,\,4\,\,\,\,\,\,,20\}\] \[\Rightarrow \] \[n(S)=20\] \[\therefore \] \[P(E)=\frac{n(E)}{n(S)}=\frac{8}{20}=\frac{2}{5}\]You need to login to perform this action.
You will be redirected in
3 sec