Question

A number from $1$ to $11$ is chosen at random. What is the probability of choosing an odd number?

Answer 1

Given we can choose a number from $1$ to $11$.

Total number of outcomes $=11$

From $1$ to $11$, odd numbers are $1,3,5,7,9,11$

The number of favorable outcomes $=6$

We know that $\mathrm{Probability}=\frac{\mathrm{number}\mathrm{of}\mathrm{favorable}\mathrm{outcomes}}{\mathrm{total}\mathrm{number}\mathrm{of}\mathrm{outcomes}}$

$=\frac{6}{11}$

Therefore the probability of choosing an odd number from $1$ to $11$is $\frac{6}{11}$.