Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
Kurt, a painter, has 9 jars of paint 4 of which are yellow, [#permalink]
04 Oct 2004, 16:59
0% (00:00) correct
0% (00:00) wrong based on 0 sessions
Kurt, a painter, has 9 jars of paint 4 of which are yellow, 2 are red and the remaining jars are brown. Kurt will combine 3 jars of paint into a new container to make a new color which he will name according to the following conditions:
Brun Y if the paint contains 2 jars of brown paint and no yellow.
Brun X if the paint contains 3 jars of brown paint.
Jaune X if the paint contains at least 2 jars of yellow.
Jaune Y if the paint contains exactly 1 jar of yellow.
What is the probability that the new color will be Jaune?
The other approach is - slightly tedious though...
JX has atleast 2 yellows and JY has exactly 1 yellow. So, we have..
4C15C2/9C3 (for JY) + 4C2*5C1/9C3 + 4C3*5C0/9C3 (for JX; the new color have only 3 jars of paint). Going by this logic also, we will get 37/42.