Choose the correct option for the following: 

A die is thrown once. Find the probability of getting an odd number.

Here, the sample space when a die is rolled = {1, 2, 3, 4, 5, 6}

i.e., the total number of outcomes = 6

the event of getting an odd number = {1, 3, 5}

i.e., the total number of favourable outcomes = 3

 Probability of getting the occurrence of an event = $\frac{total no.of favourable outcomes}{total number of outcomes}$

Hence, the probability of getting odd numbers if a die is thrown =$\frac{3}{6}=\frac{1}{2}$.