Monday

March 2, 2015

March 2, 2015

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!!!

**Answer this Question**

**Related Questions**

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

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 ...

Elementary math College - A bag contains 7 red chips and 9 blue chips. Two chips...

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

Probability PLEASE HELP - A box contains exactly five chips, three red and two ...

Probability - A box contains exactly five chips, three red and two white. Chips ...

math/probability - A bag contains 7 red chips and 10 blue chips. Two chips are ...

college math - a bag contains 7 red chips and 9 blue chips. Two chips are ...

PROBABILITY MATH - A bag contains 10 red chips and 12 blue chips. Two chips are ...