Question

There is a stack of

Answer 1

There is a 50% chance that the card will be even
2,4,6,8,10 as opposed to 1,3,5,7,9.
5/10 or 1/2

There is a 40% chance that the card will less than 5
1,2,3,4 as opposed to 5,6,7,8,9,10.
4/10 or 2/5