Probability calculations for 10-12 uniqe streets

[ignatus]

I have two questions, related to my "Fools Gold"-system, to those who know maths and probability calculations:

*What is the probability for 10 uniqe Streets to hit (no repeats?)

*What is the probability for 12 uniqe Streets to hit (no repeats?)

Thx

[Herby]

Hi ignatus,

*What is the probability for 10 uniqe Streets to hit (no repeats?)

(37./37.) (34./37.) (31./37.) (28./37.) (25./37.) (22./37.) (19./37.) (16./37.) (13./37.) (10./37.)
= 0.00493586

*What is the probability for 12 uniqe Streets to hit (no repeats?)

(37./37.) (34./37.) (31./37.) (28./37.) (25./37.) (22./37.) (19./37.) (16./37.) (13./37.) (10./37.) (7./37.) (4./37.) = 0.000100953