Solve the Mystery: Another 52 Cards

[Shigal]

Okay there is a regular 52 card deck. The first part is how many ways to pull 7 cards out; that I figured out. What I am running into is out of those 7 how many are from a single suit, and another is how many contain a straight.

 

[NoMoreExams]

Have you tried reading how to get a flush or a straight in poker (5 card draw)? I believe there's quite a few articles on that online and you can use the same logic with your 7 cards.

 

[CRGreathouse]

out of those 7 how many are from a single suit

This is four times the probability that all 7 are hearts. This should be easy to calculate.

how many contain a straight

This is 7 times the probability of a straight starting from 2, assuming you aren't allowed to 'wrap around'.