Equally Likely Events

Q.

How do you calculate$nCr$probability?

Q.

What is the formula for conditional probability?

Q. A number is randomly selected from the following list.
$1,3,3,6,6,6,8,8,8,8,10,10,10,10.$
Following events are described
X = {3 is selected}
Y = {6 is selected}
X and Y are equally likely events.

1. True
2. False