Answer:
Step-by-step explanation:
There are four aces in the deck (one for each suite). So, there are 4 out of 52 cards that are good for your outcome, leading to a 4/52=1/13 probability.
Always.
I can think of no example that makes always false.
I dont see nun
9
cos39= 7/x
x = 7/cos39
x= 9