I was trying some questions on probability when I came across this question:
Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even?
So in this case while calculating the probability, the sample space is: 6 * 6 = 36.
Now let me change this question:
One dice is thrown twice. What is the probability of getting two numbers whose product is even?
In this case I think sample space should be: 6 * 5 / 2 = 15.
Am I correct?