To determine if 13 out of 21 points is considered passing, you can calculate the percentage of points earned.
First, divide 13 by 21:
\[ \frac{13}{21} \approx 0.619 \]
Then, to convert it to a percentage, multiply by 100:
\[ 0.619 \times 100 \approx 61.9% \]
Whether 61.9% is passing depends on the specific grading policies of an institution or course. In many places, a passing grade is typically around 60% to 70%, so 13 out of 21 points may be considered passing, but it's best to check the specific grading criteria provided by the relevant authority.