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February 1, 2015

February 1, 2015

Posted by **Nick** on Wednesday, April 27, 2011 at 3:33pm.

- Discrete Math -
**MathMate**, Wednesday, April 27, 2011 at 4:04pmNumber of (ordered) ways to draw 8 balls with replacement

= 55^8

Number of ways to draw 8 different balls

=55P8

= 55!/47!

Probability of drawing 8 balls with at least two having the same number

= 1-(55!/47!)/55^8

= 25193936479/60897409375

= 0.414 approx.

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