Let [math]S = \{1, 2, 3, 4, 5, 6\}

- How many subsets are there of cardinality 4?
(Note: you can enter “C(n,k)” for [math] \binom{n}{k}\text{.} ) - How many subsets of cardinality 4 have [math]
\{2,3,5\} as a subset? - How many subsets of cardinality 4 contain at least one odd number?
- How many subsets of cardinality 4 contain exactly one even number?