Sunday

April 20, 2014

April 20, 2014

Posted by **chris** on Tuesday, September 25, 2012 at 10:15pm.

- math -
**Reiny**, Tuesday, September 25, 2012 at 10:56pmprob ( that they are the same colour)

= BBB or RRR

= (3/10)(2/9)(1/8) + (7/10)(6/9)(5/8)

= 6/720 + 210/720

= 216/720

= 3/10

prob(not the same colour) = 1 - 3/10 = 7/10

- math -
**chris**, Tuesday, September 25, 2012 at 11:12pmMany thanks!!!

**Related Questions**

statistics - an urn contains 3 blue chips and 7 red chips. sequentially draw 3 ...

statistics - Urn I and Urn II each have 2 red chips and 2 white chips. Two chips...

math - Urn I and urn II each have two red chips and two white chips. Two chips ...

Probability - urn1 contains 3 red chips and 1 white chip. urn2 contains 2 red ...

math - a bin contains seven red chips, nine green chips, three yellow chips, and...

math - a bin contains seven red chips, nine green chips, three yellow chips, and...

math - For every 7 blue chips there are 3 red chips. In a pile of 320 blue and ...

college - A box contains 4 red and 3 blue chips. What is the probability when 3 ...

MATH Prob. - a bag contains 7 red chips and 10 blue chips. Two chips are ...

Math - 20. A bag contains 7 red chips and 10 blue chips. Two chips are selected ...