1 .
Let $X = \{1,2,3,\dots,10\}$. Let $Y$ be a uniformly random subset of $X$. Define the events
- A = "$Y$ contains at least 4 elements",
- B = "all elements of $Y$ are even".
(a)
4/16
(b)
3/16
(c)
6/16
(d)
5/16