Find the theoretical probability of:

1. Drawing a red ace or a heart from a regular deck of cards. Bold text start(4 marks)Bold text End
2. When guessing the birthdays of two friends, getting exactly one right, if you know the first friend was born in a leap year and the second friend wasn't. Assume birthdays are evenly distributed through the year. Bold text start(4 marks)Bold text End
3. Being dealt at least 4 hearts in a hand of 5 cards dealt from a regular deck. Bold text start(5 marks)Bold text End
4. When selecting 3 cards from a regular deck without replacement, having the 3rd card be the second spade drawn. Bold text start(5 marks)