More math help for probabilities!

basilmarket.com forums : Chat | 8 posts archived

thread starter h0bob01 May 29 2009 + PM | QUOTE | PERMALINK | REPORT

Each of the 11 letters from the word MATHEMATICS is placed on a separate card. A card is drawn and not replaced. A second card is drawn. What is the probabiity that the 2 cards chosen are both vowels? Thank you!

chaozd3mon 05/29/09 + PM | QUOTE | PERMALINK | REPORT

4/11 x 3/10 which is ___

h0bob01 May 29 2009 + PM | QUOTE | PERMALINK | REPORT

what the... i did my multiplying wrong! lol thanks

plouey 05/29/09 + PM | QUOTE | PERMALINK | REPORT

What he said^

chinchin 05/29/09 + PM | QUOTE | PERMALINK | REPORT

OMG i hate this !

chaozd3mon 05/29/09 + PM | QUOTE | PERMALINK | REPORT

h0bob01 said: "what the... i did my multiplying wrong! lol thanks" i am right. Do you get it though?

h0bob01 05/29/09 + PM | QUOTE | PERMALINK | REPORT

yeah, one more question: Bag A contains 1 red and 2 white marbles, and Bag B contains 1 white and 2 red marbles. A marble is randomly chosen from Bag A and placed in Bag B. A marble is then randomly chosen from Bag B. Determine the probability that the marble selected from Bag B is white.

Skrato May 29 2009 + PM | QUOTE | PERMALINK | REPORT

Choice 1: 1/3 red 2/3 white Choice 2: 1/3 chance having 1 white 3 red, so 1/4x1/3 chance white Choice 2: 2/3 chance having 2 white 2 red, so 1/2x2/3 chance white Overall: 1/4x1/3 + 1/2x2/3 (=1/12 + 1/3 = 1/12 + 4/12 = 5/12) Mental arithmetic ;]