Two Interesting Probability Questions

p is probability that a man will success in a single shot
n is number of shots man is going to make

1) what is probability that a man will score at least one series of at least k successive successful shots (in the interval of n)?

2) what is probability that a difference between his unsuccessful shots at any time (for the n={1,..,n}) and his successful shots (also score in that same time/for that same value of n) will never be grater that d ?

Hope you understand