Question

A fair die is tossed twice find the probability of getting 3,2,1 on the first toss

Answer 1

The number of observations on tossing a dice = 1,2,3,4,5,6
= 6
The number of desired observations = 1,2,3
= 3
Probability = Number of desired observations
__________________________
Total Number of observations

$= \frac{3}{6}$
$= \frac{1}{2}$