91Ó°ÊÓ

A computer generates an integer from 1 to 10.

Probability:

$\text{P}=\frac{\text{favorable} \text{outcomes}}{\text{total} \text{outcomes}}$

To calculate the probability of getting factor of 20, there are 10 total outcomes. It is needed to calculate favorable outcomes.

$\begin{array}{c}\text{´Ú²¹±¹´Ç³Ü°ù²¹²ú±ô±ð â¶Ä‹â¶Ä„o³Ü³Ù c´Ç³¾±ð²õ}=\left\{1,2,4,5,10\right\}\\ =5\end{array}$

Therefore, the probability of getting factor of 20 is obtained as,

$\begin{array}{c}\text{P}\left(\text{´Ç´Ú g±ð³Ù³Ù¾±²Ô²µ´Ú²¹³¦³Ù´Ç°ù´Ç´Ú20}\right)=\frac{\text{´Ú²¹±¹´Ç°ù²¹²ú±ô±ð â¶Ä„o³Ü³Ù³¦´Ç³¾±ð}}{\text{³Ù´Ç³Ù²¹±ô â¶Ä„o³Ü³Ù³¦´Ç³¾±ð}}\\ \text{P}\left(\text{´Ç´Ú g±ð³Ù³Ù¾±²Ô²µ´Ú²¹³¦³Ù´Ç°ù´Ç´Ú20}\right)=\frac{5}{10}\\ =\frac{1}{2}\end{array}$

Therefore, the probability of getting $\text{factor of 20}$ is $\frac{1}{2}$.

Multiply $\frac{1}{2}$ by 100% to convert the fraction form in percent.

$\begin{array}{c}\text{P}\left(\text{´Ç´Ú g±ð³Ù³Ù¾±²Ô²µ´Ú²¹³¦³Ù´Ç°ù´Ç´Ú20}\right)=\frac{1}{2}×100\%\\ \text{P}\left(\text{´Ç´Ú g±ð³Ù³Ù¾±²Ô²µ´Ú²¹³¦³Ù´Ç°ù´Ç´Ú20}\right)=50\%\end{array}$

The probability of getting $\text{factor of 20}$ is 50%.